<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.troweprice.com/role/CashEquivalents" xlink:href="trow-20161231.xsd#CashEquivalents" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/CashEquivalentsDetails" xlink:href="trow-20161231.xsd#CashEquivalentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedBalanceSheets" xlink:href="trow-20161231.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="trow-20161231.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfolios" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfolios" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosFairValueMeasurementsDetails" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfoliosFairValueMeasurementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosNetAssetsDetails" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfoliosNetAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosOperatingResultsDetails" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfoliosOperatingResultsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosStatementOfCashFlowsDetails" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfoliosStatementOfCashFlowsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosTables" xlink:href="trow-20161231.xsd#ConsolidatedSponsoredInvestmentPortfoliosTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="trow-20161231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedStatementsOfCashFlowsParenthetical" xlink:href="trow-20161231.xsd#ConsolidatedStatementsOfCashFlowsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:href="trow-20161231.xsd#ConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedStatementsOfIncome" xlink:href="trow-20161231.xsd#ConsolidatedStatementsOfIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/ConsolidatedStatementsOfStockholdersEquity" xlink:href="trow-20161231.xsd#ConsolidatedStatementsOfStockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/DellAppraisalRightsMatter" xlink:href="trow-20161231.xsd#DellAppraisalRightsMatter" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/DellAppraisalRightsMatterDetails" xlink:href="trow-20161231.xsd#DellAppraisalRightsMatterDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/DocumentAndEntityInformation" xlink:href="trow-20161231.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/EarningsPerShareCalculations" xlink:href="trow-20161231.xsd#EarningsPerShareCalculations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/EarningsPerShareCalculationsDetails" xlink:href="trow-20161231.xsd#EarningsPerShareCalculationsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/EarningsPerShareCalculationsTables" xlink:href="trow-20161231.xsd#EarningsPerShareCalculationsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/FairValueMeasurements" xlink:href="trow-20161231.xsd#FairValueMeasurements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/FairValueMeasurementsDetails" xlink:href="trow-20161231.xsd#FairValueMeasurementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/FairValueMeasurementsTables" xlink:href="trow-20161231.xsd#FairValueMeasurementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxes" xlink:href="trow-20161231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesChangesInUnrecognizedTaxBenefitsDetails" xlink:href="trow-20161231.xsd#IncomeTaxesChangesInUnrecognizedTaxBenefitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesDeferredIncomeTaxesTaxBenefitsDetails" xlink:href="trow-20161231.xsd#IncomeTaxesDeferredIncomeTaxesTaxBenefitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails" xlink:href="trow-20161231.xsd#IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesNarrativeDetails" xlink:href="trow-20161231.xsd#IncomeTaxesNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesNetDeferredTaxAssetsDetails" xlink:href="trow-20161231.xsd#IncomeTaxesNetDeferredTaxAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesProvisionForIncomeTaxesDetails" xlink:href="trow-20161231.xsd#IncomeTaxesProvisionForIncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/IncomeTaxesTables" xlink:href="trow-20161231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServices" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServices" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesInvestmentAdvisoryServicesDetails" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServicesInvestmentAdvisoryServicesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesOtherFeesEarnedFromSponsoredUSMutualFundsDetails" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServicesOtherFeesEarnedFromSponsoredUSMutualFundsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesReceivablesDetails" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServicesReceivablesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesRevenuesAndServicesConcentrationDetails" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServicesRevenuesAndServicesConcentrationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesTables" xlink:href="trow-20161231.xsd#InformationAboutReceivablesRevenuesAndServicesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/Investments" xlink:href="trow-20161231.xsd#Investments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:href="trow-20161231.xsd#InvestmentsAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsDividendsDetails" xlink:href="trow-20161231.xsd#InvestmentsDividendsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsInvestmentsDetails" xlink:href="trow-20161231.xsd#InvestmentsInvestmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsTables" xlink:href="trow-20161231.xsd#InvestmentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsUnrealizedLossesOnAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:href="trow-20161231.xsd#InvestmentsUnrealizedLossesOnAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/InvestmentsVariableInterestEntitiesDetails" xlink:href="trow-20161231.xsd#InvestmentsVariableInterestEntitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncome" xlink:href="trow-20161231.xsd#OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:href="trow-20161231.xsd#OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeDeferredTaxBenefitsIncomeTaxesDetails" xlink:href="trow-20161231.xsd#OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeDeferredTaxBenefitsIncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeReclassificationAdjustmentsDetails" xlink:href="trow-20161231.xsd#OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeReclassificationAdjustmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeTables" xlink:href="trow-20161231.xsd#OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherDisclosures" xlink:href="trow-20161231.xsd#OtherDisclosures" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/OtherDisclosuresDetails" xlink:href="trow-20161231.xsd#OtherDisclosuresDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/PropertyAndEquipment" xlink:href="trow-20161231.xsd#PropertyAndEquipment" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/PropertyAndEquipmentLeasedDetails" xlink:href="trow-20161231.xsd#PropertyAndEquipmentLeasedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/PropertyAndEquipmentOwnedDetails" xlink:href="trow-20161231.xsd#PropertyAndEquipmentOwnedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/PropertyAndEquipmentTables" xlink:href="trow-20161231.xsd#PropertyAndEquipmentTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensation" xlink:href="trow-20161231.xsd#StockBasedCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensationDetails" xlink:href="trow-20161231.xsd#StockBasedCompensationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensationFutureStockBasedCompensationExpenseDetails" xlink:href="trow-20161231.xsd#StockBasedCompensationFutureStockBasedCompensationExpenseDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensationRestrictedSharesAndStockUnitsDetails" xlink:href="trow-20161231.xsd#StockBasedCompensationRestrictedSharesAndStockUnitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensationStockOptionsDetails" xlink:href="trow-20161231.xsd#StockBasedCompensationStockOptionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockBasedCompensationTables" xlink:href="trow-20161231.xsd#StockBasedCompensationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockholdersEquity" xlink:href="trow-20161231.xsd#StockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/StockholdersEquityDetails" xlink:href="trow-20161231.xsd#StockholdersEquityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesGoodwillDetails" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesGoodwillDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesInvestmentsDetails" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesInvestmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesNewAccountingGuidanceDetails" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesNewAccountingGuidanceDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesStockBasedCompensationDetails" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesStockBasedCompensationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="trow-20161231.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowSchedule" xlink:href="trow-20161231.xsd#SupplementaryConsolidatingCashFlowSchedule" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowScheduleDetails" xlink:href="trow-20161231.xsd#SupplementaryConsolidatingCashFlowScheduleDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowScheduleTables" xlink:href="trow-20161231.xsd#SupplementaryConsolidatingCashFlowScheduleTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnaudited" xlink:href="trow-20161231.xsd#SupplementaryQuarterlyFinancialDataUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnauditedDetails" xlink:href="trow-20161231.xsd#SupplementaryQuarterlyFinancialDataUnauditedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnauditedTables" xlink:href="trow-20161231.xsd#SupplementaryQuarterlyFinancialDataUnauditedTables" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/CashEquivalents" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/CashEquivalentsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedBalanceSheets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_6AE40101BAA9ED295DE26ED8A291A7E8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_D1304787ADEB592F68F76ED8A28FA880" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_6AE40101BAA9ED295DE26ED8A291A7E8" xlink:to="loc_us-gaap_StatementTable_D1304787ADEB592F68F76ED8A28FA880" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:label="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_7EF2393A13949E71182D6ED8A29085C0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_D1304787ADEB592F68F76ED8A28FA880" xlink:to="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_7EF2393A13949E71182D6ED8A29085C0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_3B52788BAB9F00E906C36ED8A2919534_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_7EF2393A13949E71182D6ED8A29085C0" xlink:to="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_3B52788BAB9F00E906C36ED8A2919534_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_3B52788BAB9F00E906C36ED8A2919534" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_7EF2393A13949E71182D6ED8A29085C0" xlink:to="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_3B52788BAB9F00E906C36ED8A2919534" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_2772555DFA51971716A36ED8A29115A6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_3B52788BAB9F00E906C36ED8A2919534" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_2772555DFA51971716A36ED8A29115A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets" xlink:label="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_D65B0F8DB0657DFBB4C16ED8A29137A9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6AE40101BAA9ED295DE26ED8A291A7E8" xlink:to="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_D65B0F8DB0657DFBB4C16ED8A29137A9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities" xlink:label="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_4DE86F3EDB3A6C1DFE906ED8A292A0AC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6AE40101BAA9ED295DE26ED8A291A7E8" xlink:to="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_4DE86F3EDB3A6C1DFE906ED8A292A0AC" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfolios" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosFairValueMeasurementsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_A6A906647F21531CEC6AB8FE090148BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:to="loc_trow_ConsolidatedEntitiesAxis_A6A906647F21531CEC6AB8FE090148BB" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_A7A6F018442274FB8332B8FE09014CA5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_A6A906647F21531CEC6AB8FE090148BB" xlink:to="loc_trow_ConsolidatedEntitiesDomain_A7A6F018442274FB8332B8FE09014CA5_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_A7A6F018442274FB8332B8FE09014CA5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_A6A906647F21531CEC6AB8FE090148BB" xlink:to="loc_trow_ConsolidatedEntitiesDomain_A7A6F018442274FB8332B8FE09014CA5" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_414C3674F22A4DCD030BB8FE090254B0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_A7A6F018442274FB8332B8FE09014CA5" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_414C3674F22A4DCD030BB8FE090254B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="loc_us-gaap_InvestmentTypeAxis_CD86FEA408A933EE04C9B8FE090229CD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:to="loc_us-gaap_InvestmentTypeAxis_CD86FEA408A933EE04C9B8FE090229CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_CD86FEA408A933EE04C9B8FE090229CD" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_CD86FEA408A933EE04C9B8FE090229CD" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_72B3CC9C65A251956E74B8FE0902C4E5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC" xlink:to="loc_us-gaap_EquitySecuritiesMember_72B3CC9C65A251956E74B8FE0902C4E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FixedIncomeInvestmentsMember" xlink:label="loc_us-gaap_FixedIncomeInvestmentsMember_B40AE246D1E5A35DBE25B8FE0902ABC3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC" xlink:to="loc_us-gaap_FixedIncomeInvestmentsMember_B40AE246D1E5A35DBE25B8FE0902ABC3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherThanSecuritiesInvestmentMember" xlink:label="loc_us-gaap_OtherThanSecuritiesInvestmentMember_97E73ADE937722D6D2DFB8FE09023095" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_2408803008DC39723828B8FE090264DC" xlink:to="loc_us-gaap_OtherThanSecuritiesInvestmentMember_97E73ADE937722D6D2DFB8FE09023095" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_A81C31FB86F64B61B450B8FE090213C2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_A81C31FB86F64B61B450B8FE090213C2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_64E7A75405ED4E587AA5B8FE0902FD28_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_A81C31FB86F64B61B450B8FE090213C2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_64E7A75405ED4E587AA5B8FE0902FD28_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_64E7A75405ED4E587AA5B8FE0902FD28" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_A81C31FB86F64B61B450B8FE090213C2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_64E7A75405ED4E587AA5B8FE0902FD28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_5A23E5C1962BF05AD5C2B8FE0903E3D3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_64E7A75405ED4E587AA5B8FE0902FD28" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_5A23E5C1962BF05AD5C2B8FE0903E3D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5281269CACB913B82AEEB8FE09038CA6" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_11FF4AED5BCFCA208622B8FE09011563" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5281269CACB913B82AEEB8FE09038CA6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5281269CACB913B82AEEB8FE09038CA6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5281269CACB913B82AEEB8FE09038CA6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_87F441BB2F7E26FF1CF9B8FE090381AE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_87F441BB2F7E26FF1CF9B8FE090381AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_929261565F8626D754BFB8FE09039338" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_30C5CB1E0547454A196CB8FE09038100" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_929261565F8626D754BFB8FE09039338" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_B7EA5E8FD0B4C937EB71B8FE0903170C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_B7EA5E8FD0B4C937EB71B8FE0903170C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_us-gaap_TradingSecurities_47B664328AF5A09B4ECCB8FE09033A79" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:to="loc_us-gaap_TradingSecurities_47B664328AF5A09B4ECCB8FE09033A79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_A35C0ADF3F77AB33A7F5B8FE09034F09" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_A35C0ADF3F77AB33A7F5B8FE09034F09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_4DF3D00798DEBD1B723EB8FE09031A39" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CA918C5C454A8ACE6A74B8FE0903FB6D" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_4DF3D00798DEBD1B723EB8FE09031A39" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosNetAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedBalanceSheetStatementTable" xlink:label="loc_us-gaap_CondensedBalanceSheetStatementTable_5C1AE1499CDCCC8BB734B8FE0919F20F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_CondensedBalanceSheetStatementTable_5C1AE1499CDCCC8BB734B8FE0919F20F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_80AC0CBBDF7689EB5F69B8FE0919BEBE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementTable_5C1AE1499CDCCC8BB734B8FE0919F20F" xlink:to="loc_trow_ConsolidatedEntitiesAxis_80AC0CBBDF7689EB5F69B8FE0919BEBE" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_54F35FBF24CDEA4D8AF0B8FE09197130_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_80AC0CBBDF7689EB5F69B8FE0919BEBE" xlink:to="loc_trow_ConsolidatedEntitiesDomain_54F35FBF24CDEA4D8AF0B8FE09197130_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_54F35FBF24CDEA4D8AF0B8FE09197130" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_80AC0CBBDF7689EB5F69B8FE0919BEBE" xlink:to="loc_trow_ConsolidatedEntitiesDomain_54F35FBF24CDEA4D8AF0B8FE09197130" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_0280944AEEA6CAB89A40B8FE091982D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_54F35FBF24CDEA4D8AF0B8FE09197130" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_0280944AEEA6CAB89A40B8FE091982D8" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VotingInterestEntitiesMember" xlink:label="loc_trow_VotingInterestEntitiesMember_ECEEFA53F7E24DF8D93AB8FE0919C196" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_0280944AEEA6CAB89A40B8FE091982D8" xlink:to="loc_trow_VotingInterestEntitiesMember_ECEEFA53F7E24DF8D93AB8FE0919C196" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_04BF548C3B7AD604F93DB8FE091954B0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_0280944AEEA6CAB89A40B8FE091982D8" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_04BF548C3B7AD604F93DB8FE091954B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_E82AD4ED2E50AF777220B8FE0919672A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementTable_5C1AE1499CDCCC8BB734B8FE0919F20F" xlink:to="loc_us-gaap_ConsolidationItemsAxis_E82AD4ED2E50AF777220B8FE0919672A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_B398C7B0EC31D4F2B431B8FE0919F6FE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_E82AD4ED2E50AF777220B8FE0919672A" xlink:to="loc_us-gaap_ConsolidationItemsDomain_B398C7B0EC31D4F2B431B8FE0919F6FE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_B398C7B0EC31D4F2B431B8FE0919F6FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_E82AD4ED2E50AF777220B8FE0919672A" xlink:to="loc_us-gaap_ConsolidationItemsDomain_B398C7B0EC31D4F2B431B8FE0919F6FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReportableLegalEntitiesMember" xlink:label="loc_us-gaap_ReportableLegalEntitiesMember_000FB8E91F606AB09E08B8FE0919CB4F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_B398C7B0EC31D4F2B431B8FE0919F6FE" xlink:to="loc_us-gaap_ReportableLegalEntitiesMember_000FB8E91F606AB09E08B8FE0919CB4F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2E1C090287A770B5F53EB8FE0919ED1C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2E1C090287A770B5F53EB8FE0919ED1C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Investments" xlink:label="loc_us-gaap_Investments_1A41047747D7D8973148B8FE091963D0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_Investments_1A41047747D7D8973148B8FE091963D0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets_15ECAE0C41B83B16826EB8FE0919A803" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_OtherAssets_15ECAE0C41B83B16826EB8FE0919A803" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_F4F7F934228518BEF977B8FE0919AC94" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_Assets_F4F7F934228518BEF977B8FE0919AC94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_2B2CD3FC194C5019CD0DB8FE091AE533" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_Liabilities_2B2CD3FC194C5019CD0DB8FE091AE533" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsNet" xlink:label="loc_us-gaap_AssetsNet_2469EFFA9AC1A29D08BFB8FE091AC62E" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_AssetsNet_2469EFFA9AC1A29D08BFB8FE091AC62E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DE66CA7EB7DE8D9FF90DB8FE091AD5B4" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DE66CA7EB7DE8D9FF90DB8FE091AD5B4" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_InvestmentSponsoredInvestmentPortfoliosAttributabletoParent" xlink:label="loc_trow_InvestmentSponsoredInvestmentPortfoliosAttributabletoParent_37C85372BBA785C069EBB8FE091A37D9" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedBalanceSheetStatementsCaptionsLineItems_2E729C6617C06315D576B8FE09190E15" xlink:to="loc_trow_InvestmentSponsoredInvestmentPortfoliosAttributabletoParent_37C85372BBA785C069EBB8FE091A37D9" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosOperatingResultsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedIncomeStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedIncomeStatementTable" xlink:label="loc_us-gaap_CondensedIncomeStatementTable_0F13FBE2E050CD0737879928D3213DCC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_CondensedIncomeStatementTable_0F13FBE2E050CD0737879928D3213DCC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_756743AB21C51BA5E7A79928D3219F1F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedIncomeStatementTable_0F13FBE2E050CD0737879928D3213DCC" xlink:to="loc_trow_ConsolidatedEntitiesAxis_756743AB21C51BA5E7A79928D3219F1F" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_0B2292A9CCB5ED6820D79928D3212ABC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_756743AB21C51BA5E7A79928D3219F1F" xlink:to="loc_trow_ConsolidatedEntitiesDomain_0B2292A9CCB5ED6820D79928D3212ABC_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_0B2292A9CCB5ED6820D79928D3212ABC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_756743AB21C51BA5E7A79928D3219F1F" xlink:to="loc_trow_ConsolidatedEntitiesDomain_0B2292A9CCB5ED6820D79928D3212ABC" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_A648EF98D9CD85958B579928D3217538" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_0B2292A9CCB5ED6820D79928D3212ABC" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_A648EF98D9CD85958B579928D3217538" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VotingInterestEntitiesMember" xlink:label="loc_trow_VotingInterestEntitiesMember_E9A9357916CA5AE154FA9928D321741C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_A648EF98D9CD85958B579928D3217538" xlink:to="loc_trow_VotingInterestEntitiesMember_E9A9357916CA5AE154FA9928D321741C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_0FF6FB99B5BF13EE76629928D322DD9D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_A648EF98D9CD85958B579928D3217538" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_0FF6FB99B5BF13EE76629928D322DD9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_07FA03F5EB052F4471B19928D3220A1D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedIncomeStatementTable_0F13FBE2E050CD0737879928D3213DCC" xlink:to="loc_us-gaap_ConsolidationItemsAxis_07FA03F5EB052F4471B19928D3220A1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_07FA03F5EB052F4471B19928D3220A1D" xlink:to="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_07FA03F5EB052F4471B19928D3220A1D" xlink:to="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReportableLegalEntitiesMember" xlink:label="loc_us-gaap_ReportableLegalEntitiesMember_2AF222F8D8DA916558709928D3229C4A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795" xlink:to="loc_us-gaap_ReportableLegalEntitiesMember_2AF222F8D8DA916558709928D3229C4A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_8B820E5016E858F521249928D322A0D5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_06B3D6CC3458006587B69928D322C795" xlink:to="loc_us-gaap_ConsolidationEliminationsMember_8B820E5016E858F521249928D322A0D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_5CE298CEA66BC79E1A6C9928D322F75F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_OperatingExpenses_5CE298CEA66BC79E1A6C9928D322F75F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentIncomeNonoperating" xlink:label="loc_us-gaap_InvestmentIncomeNonoperating_B1461617EFF323AD1F2E9928D3227F64" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_InvestmentIncomeNonoperating_B1461617EFF323AD1F2E9928D3227F64" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_F5EB602A789E2D2D272F9928D32267F5" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_F5EB602A789E2D2D272F9928D32267F5" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_IncomeLossfromContinuingOperationsbeforeIncomeTaxesAttributabletoParent" xlink:label="loc_trow_IncomeLossfromContinuingOperationsbeforeIncomeTaxesAttributabletoParent_AD039270E44A8F931C989928D322CD4D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_trow_IncomeLossfromContinuingOperationsbeforeIncomeTaxesAttributabletoParent_AD039270E44A8F931C989928D322CD4D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_AE109225272DB2C857009928D322B611" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_AE109225272DB2C857009928D322B611" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees" xlink:label="loc_us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees_BB5240FBA34EDE275BF69928D322DD9B" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedIncomeStatementsCaptionsLineItems_402E3DA11A682BC242CD9928D32294AB" xlink:to="loc_us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees_BB5240FBA34EDE275BF69928D322DD9B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosStatementOfCashFlowsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedCashFlowStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedCashFlowStatementTable" xlink:label="loc_us-gaap_CondensedCashFlowStatementTable_5A197346F35F697CE10EB8FE0909C21C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_CondensedCashFlowStatementTable_5A197346F35F697CE10EB8FE0909C21C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_EE991B727349AD90E2DFB8FE09091240" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedCashFlowStatementTable_5A197346F35F697CE10EB8FE0909C21C" xlink:to="loc_trow_ConsolidatedEntitiesAxis_EE991B727349AD90E2DFB8FE09091240" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_D97720BD20CF79FDA798B8FE090AC8A3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_EE991B727349AD90E2DFB8FE09091240" xlink:to="loc_trow_ConsolidatedEntitiesDomain_D97720BD20CF79FDA798B8FE090AC8A3_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_D97720BD20CF79FDA798B8FE090AC8A3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_EE991B727349AD90E2DFB8FE09091240" xlink:to="loc_trow_ConsolidatedEntitiesDomain_D97720BD20CF79FDA798B8FE090AC8A3" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_DDE3013AF7FA5706886EB8FE090A5878" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_D97720BD20CF79FDA798B8FE090AC8A3" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_DDE3013AF7FA5706886EB8FE090A5878" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VotingInterestEntitiesMember" xlink:label="loc_trow_VotingInterestEntitiesMember_26E852E6BB58F82AB6B7B8FE090AF000" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_DDE3013AF7FA5706886EB8FE090A5878" xlink:to="loc_trow_VotingInterestEntitiesMember_26E852E6BB58F82AB6B7B8FE090AF000" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_1C193CC3F2BF5AC89FD8B8FE090A0056" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedInvestmentPortfoliosMember_DDE3013AF7FA5706886EB8FE090A5878" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_1C193CC3F2BF5AC89FD8B8FE090A0056" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_10B1CE779947B6ECC046B8FE090AB53A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CondensedCashFlowStatementTable_5A197346F35F697CE10EB8FE0909C21C" xlink:to="loc_us-gaap_ConsolidationItemsAxis_10B1CE779947B6ECC046B8FE090AB53A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_10B1CE779947B6ECC046B8FE090AB53A" xlink:to="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_10B1CE779947B6ECC046B8FE090AB53A" xlink:to="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReportableLegalEntitiesMember" xlink:label="loc_us-gaap_ReportableLegalEntitiesMember_1A46126CFAAC1FA1B8EEB8FE090AB7F8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5" xlink:to="loc_us-gaap_ReportableLegalEntitiesMember_1A46126CFAAC1FA1B8EEB8FE090AB7F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_86A74B902F761705CC69B8FE090A83C9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_E8C4523F3236AF5E23DFB8FE090AA0A5" xlink:to="loc_us-gaap_ConsolidationEliminationsMember_86A74B902F761705CC69B8FE090A83C9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_BA1F80E5E2BD037ACDE3B8FE090A7218" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_BA1F80E5E2BD037ACDE3B8FE090A7218" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_91B5FD7FE524E9EE30FCB8FE090A387B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_91B5FD7FE524E9EE30FCB8FE090A387B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_97E8DC93951A0CD40A7EB8FE090A4291" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_97E8DC93951A0CD40A7EB8FE090A4291" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0F1E912C660C7DB1ABCFB8FE090BE4FA" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0F1E912C660C7DB1ABCFB8FE090BE4FA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_D4A473E9FC9197C3E6BAB8FE090BEEBC" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_D4A473E9FC9197C3E6BAB8FE090BEEBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2BCF7EDC547BE55651E6B8FE090B043E" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedCashFlowStatementsCaptionsLineItems_DC1684BBA69806133003B8FE090AA141" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2BCF7EDC547BE55651E6B8FE090B043E" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedSponsoredInvestmentPortfoliosTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedStatementsOfCashFlowsParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_62BFB524A589C27EDE6373A168A5F4E1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_C0432176BCA01A57898073A168A5BB6C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_62BFB524A589C27EDE6373A168A5F4E1" xlink:to="loc_us-gaap_StatementTable_C0432176BCA01A57898073A168A5BB6C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_DC718007D0E395D496E073A168A526A3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_C0432176BCA01A57898073A168A5BB6C" xlink:to="loc_trow_ConsolidatedEntitiesAxis_DC718007D0E395D496E073A168A526A3" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_86B616E758A5A69A4B5773A168A53116_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_DC718007D0E395D496E073A168A526A3" xlink:to="loc_trow_ConsolidatedEntitiesDomain_86B616E758A5A69A4B5773A168A53116_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_86B616E758A5A69A4B5773A168A53116" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_DC718007D0E395D496E073A168A526A3" xlink:to="loc_trow_ConsolidatedEntitiesDomain_86B616E758A5A69A4B5773A168A53116" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_9956F0D7A10E694A09DA73A168A5429C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_86B616E758A5A69A4B5773A168A53116" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_9956F0D7A10E694A09DA73A168A5429C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_76CAA52A57FC8F7C61C673A168A5A397" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62BFB524A589C27EDE6373A168A5F4E1" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_76CAA52A57FC8F7C61C673A168A5A397" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_BD54A1A0B540D9E0FC96147AB94602D3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_StatementTable_BD54A1A0B540D9E0FC96147AB94602D3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_04FDE1941DB4025657BD147AB946D6DF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_BD54A1A0B540D9E0FC96147AB94602D3" xlink:to="loc_trow_ConsolidatedEntitiesAxis_04FDE1941DB4025657BD147AB946D6DF" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_04FDE1941DB4025657BD147AB946D6DF" xlink:to="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_04FDE1941DB4025657BD147AB946D6DF" xlink:to="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_B17A4CB89239E76E42AA147AB9463034" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_B17A4CB89239E76E42AA147AB9463034" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvesteeMember" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_51C69609EC4284C34343147AB946CC3A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_38519D7A9ABBA9A5F6FF147AB946E335" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_51C69609EC4284C34343147AB946CC3A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_A11B04327E7A36BCC7E8147AB946435D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_ProfitLoss_A11B04327E7A36BCC7E8147AB946435D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax_69945829DC9D0996060D147AB9467A82" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax_69945829DC9D0996060D147AB9467A82" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OtherComprehensiveIncomeLossAdjustmentForCapitalGainDistributionReceivedBeforeTax1" xlink:label="loc_trow_OtherComprehensiveIncomeLossAdjustmentForCapitalGainDistributionReceivedBeforeTax1_20C28A2547CA29BC99C2147AB9467B40" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_trow_OtherComprehensiveIncomeLossAdjustmentForCapitalGainDistributionReceivedBeforeTax1_20C28A2547CA29BC99C2147AB9467B40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_CB666434346560679E67147AB9460EFC" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_CB666434346560679E67147AB9460EFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax_5D35D4A9BCC3800EBBD1147AB946AB8D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax_5D35D4A9BCC3800EBBD1147AB946AB8D" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForAvailableForSaleSecuritiesBeforeTax" xlink:label="loc_trow_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForAvailableForSaleSecuritiesBeforeTax_DC19498FF59C0C88BBCE147AB94627DD" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_trow_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForAvailableForSaleSecuritiesBeforeTax_DC19498FF59C0C88BBCE147AB94627DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_9F6544AC48628CA75D25147AB9460AF4" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_9F6544AC48628CA75D25147AB9460AF4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax_DF5428BDAA51D9D731FB147AB94640FC" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax_DF5428BDAA51D9D731FB147AB94640FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax_F97B924B381828E9FD3C147AB946CF0F" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax_F97B924B381828E9FD3C147AB946CF0F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_80BF22658B209EDF50A7147AB9467D93" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_80BF22658B209EDF50A7147AB9467D93" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_A0A94E6576D9F1857977147AB946709B" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract_77ECD1089E254C8FC3AC147AB94642E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_A0A94E6576D9F1857977147AB946709B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_A82C8311589EABB1FD39147AB946D7AD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_A82C8311589EABB1FD39147AB946D7AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_BDCAE33D9EF27F424929147AB9469F95" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_BDCAE33D9EF27F424929147AB9469F95" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_FA1F6BE9AF47B854D14B147AB9469728" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_FA1F6BE9AF47B854D14B147AB9469728" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_C38962FF1B8C5A56C02C147AB946B24D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_C38962FF1B8C5A56C02C147AB946B24D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_4B7C3EFD42E0BA815683147AB946BB1E" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9DCA8B89D1F1EF34ED09147AB94661C2" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_4B7C3EFD42E0BA815683147AB946BB1E" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedStatementsOfIncome" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/ConsolidatedStatementsOfStockholdersEquity" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_E71CBF1091C6CBE49384DBD6E4CB26D4" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_E71CBF1091C6CBE49384DBD6E4CB26D4" xlink:to="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionAxis" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_61FB08933B3500CCCF73DBD6E4CB9F28" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_61FB08933B3500CCCF73DBD6E4CB9F28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_062B3970AB4ECDA71A87DBD6E4CB5826_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_61FB08933B3500CCCF73DBD6E4CB9F28" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_062B3970AB4ECDA71A87DBD6E4CB5826_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_062B3970AB4ECDA71A87DBD6E4CB5826" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_61FB08933B3500CCCF73DBD6E4CB9F28" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_062B3970AB4ECDA71A87DBD6E4CB5826" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_55C9A9E89708D6E01877DBD6E4CBF74F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_062B3970AB4ECDA71A87DBD6E4CB5826" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_55C9A9E89708D6E01877DBD6E4CBF74F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_5216BAEB4F99388FC93EDBD6E4CB62ED" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:to="loc_us-gaap_AwardTypeAxis_5216BAEB4F99388FC93EDBD6E4CB62ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5216BAEB4F99388FC93EDBD6E4CB62ED" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5216BAEB4F99388FC93EDBD6E4CB62ED" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_5BABF1690991808CDF08DBD6E4CB51CC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775" xlink:to="loc_us-gaap_RestrictedStockMember_5BABF1690991808CDF08DBD6E4CB51CC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_2B0D2914F408CE2FD605DBD6E4CB8D82" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_76F01910EEE380325421DBD6E4CB0775" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_2B0D2914F408CE2FD605DBD6E4CB8D82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_CC6230A9BB35AFCCA71EDBD6E4CBE44B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_CC6230A9BB35AFCCA71EDBD6E4CBE44B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_CC6230A9BB35AFCCA71EDBD6E4CBE44B" xlink:to="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_CC6230A9BB35AFCCA71EDBD6E4CBE44B" xlink:to="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_347CEC9969A505ED843EDBD6E4CBE654" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:to="loc_us-gaap_CommonStockMember_347CEC9969A505ED843EDBD6E4CBE654" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_789FF953258679E6D807DBD6E4CBEBAD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_789FF953258679E6D807DBD6E4CBEBAD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RetainedEarningsUnappropriatedMember" xlink:label="loc_us-gaap_RetainedEarningsUnappropriatedMember_2B0C89B0C80F6EC6B56DDBD6E4CBDB0D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:to="loc_us-gaap_RetainedEarningsUnappropriatedMember_2B0C89B0C80F6EC6B56DDBD6E4CBDB0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4B078E3ACBE9B8108E00DBD6E4CBF43C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_6CF5EBCBF033C446AC27DBD6E4CB933A" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4B078E3ACBE9B8108E00DBD6E4CBF43C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_8CC7A704827133D8B817DBD6E4CBCDD3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_013013E6A45C31F0EB2DDBD6E4CB86A6" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_8CC7A704827133D8B817DBD6E4CBCDD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_8CC7A704827133D8B817DBD6E4CBCDD3" xlink:to="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_8CC7A704827133D8B817DBD6E4CBCDD3" xlink:to="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountingStandardsUpdate201502Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201502Member_173FD5E939744A604555DBD6E4CBB455" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE" xlink:to="loc_us-gaap_AccountingStandardsUpdate201502Member_173FD5E939744A604555DBD6E4CBB455" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember" xlink:label="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_4FB92E5D14AC0E92042FDBD6E4CB1D74" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_B5AF78A7A20645047C87DBD6E4CB05AE" xlink:to="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_4FB92E5D14AC0E92042FDBD6E4CB1D74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E71CBF1091C6CBE49384DBD6E4CB26D4" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_34F9A4B1F1E14B417AEFDBD6E4CB8D33" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_SharesOutstanding_34F9A4B1F1E14B417AEFDBD6E4CB8D33" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_4405076633CFBD4EB0B1DBD6E4CB9F72" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_StockholdersEquity_4405076633CFBD4EB0B1DBD6E4CB9F72" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_7E039ADFA6AE17DF6911DBD6E4CB3996" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_7E039ADFA6AE17DF6911DBD6E4CB3996" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockholdersEquityAttributabletoParentAdjustedBalance" xlink:label="loc_trow_StockholdersEquityAttributabletoParentAdjustedBalance_895FFD1CB634B5F9C478DBD6E4CB85EA" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_trow_StockholdersEquityAttributabletoParentAdjustedBalance_895FFD1CB634B5F9C478DBD6E4CB85EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_F5EE6E7C80BB2F8130CEDBD6E4CB9C33" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_NetIncomeLoss_F5EE6E7C80BB2F8130CEDBD6E4CB9C33" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_2A4F8BD8E40FEFA2CCB9DBD6E4CB6974" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_2A4F8BD8E40FEFA2CCB9DBD6E4CB6974" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsCash" xlink:label="loc_us-gaap_DividendsCash_9A720FB539DA8EEDBE08DBD6E4CBD3B3" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_DividendsCash_9A720FB539DA8EEDBE08DBD6E4CBD3B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockIssuedDuringPeriodStockOptionsExercisedNetOfSharesForTaxWithholdingStrikePrice" xlink:label="loc_trow_StockIssuedDuringPeriodStockOptionsExercisedNetOfSharesForTaxWithholdingStrikePrice_63D8591186B236558F34DBD6E4CB5E93" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_trow_StockIssuedDuringPeriodStockOptionsExercisedNetOfSharesForTaxWithholdingStrikePrice_63D8591186B236558F34DBD6E4CB5E93" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockIssuedDuringPeriodValueStockOptionsExercisedNetofTaxWithholdingsStrikePrice" xlink:label="loc_trow_StockIssuedDuringPeriodValueStockOptionsExercisedNetofTaxWithholdingsStrikePrice_F9BE5460B14874CE3A7EDBD6E4CBA259" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_trow_StockIssuedDuringPeriodValueStockOptionsExercisedNetofTaxWithholdingsStrikePrice_F9BE5460B14874CE3A7EDBD6E4CBA259" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesOther" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesOther_182BD153F819DB424D96DBD6E4CBBC5F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesOther_182BD153F819DB424D96DBD6E4CBBC5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueOther" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueOther_EDB9ED1A9322D2564171DBD6E4CB1106" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueOther_EDB9ED1A9322D2564171DBD6E4CB1106" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_7C4A7158729E8D69714EDBD6E4CB86B8" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_7C4A7158729E8D69714EDBD6E4CB86B8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_4F675018ED68D328B813DBD6E4CBDCFB" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_4F675018ED68D328B813DBD6E4CBDCFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet" xlink:label="loc_us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet_C20FDABB3970D5A3321BDBD6E4CBDF1B" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet_C20FDABB3970D5A3321BDBD6E4CBDF1B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_EF6AC0065545B603CEFBDBD6E4CB49DE" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_EF6AC0065545B603CEFBDBD6E4CB49DE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsSharebasedCompensationPaidInKind" xlink:label="loc_us-gaap_DividendsSharebasedCompensationPaidInKind_ED317F3F0F155BD8151FDBD6E4CB3FB0" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_181F5B032FCAD525BEF1DBD6E4CBC19B" xlink:to="loc_us-gaap_DividendsSharebasedCompensationPaidInKind_ED317F3F0F155BD8151FDBD6E4CB3FB0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_F7047253EE8115A6F0F0DBD6E4CB539D" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_F7047253EE8115A6F0F0DBD6E4CB539D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_ED50A068A915D0F7A2D3DBD6E4CB466E" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0392318229AAEEB35E60DBD6E4CB1743" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_ED50A068A915D0F7A2D3DBD6E4CB466E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInTemporaryEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E71CBF1091C6CBE49384DBD6E4CB26D4" xlink:to="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_C85989DC197F1DB89525DBD6E4CB2599" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_C85989DC197F1DB89525DBD6E4CB2599" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_CumulativeEffectofNewAccountingPrincipleinPeriodofAdoptionRedeemableNoncontrollingInterests" xlink:label="loc_trow_CumulativeEffectofNewAccountingPrincipleinPeriodofAdoptionRedeemableNoncontrollingInterests_48C4788AA3FED24261B8DBD6E4CB584A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_trow_CumulativeEffectofNewAccountingPrincipleinPeriodofAdoptionRedeemableNoncontrollingInterests_48C4788AA3FED24261B8DBD6E4CB584A" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RedeemableNoncontrollingInterestEquityCarryingAmountAdjustedBalance" xlink:label="loc_trow_RedeemableNoncontrollingInterestEquityCarryingAmountAdjustedBalance_D57A850F00478E6097E7DBD6E4CB4110" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_trow_RedeemableNoncontrollingInterestEquityCarryingAmountAdjustedBalance_D57A850F00478E6097E7DBD6E4CB4110" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_2B67E4FD2BFBDE6C1652DBD6E4CB3878" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_2B67E4FD2BFBDE6C1652DBD6E4CB3878" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_D7783E908C7885104D1DDBD6E4CBD321" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_D7783E908C7885104D1DDBD6E4CBD321" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SubscriptionFromRedemptionDistributionToNoncontrollingInterest" xlink:label="loc_trow_SubscriptionFromRedemptionDistributionToNoncontrollingInterest_3D49453482A5E56188B5DBD6E4CBD6B7" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_trow_SubscriptionFromRedemptionDistributionToNoncontrollingInterest_3D49453482A5E56188B5DBD6E4CBD6B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation" xlink:label="loc_us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation_F894D45D62D50AF05B37DBD6E4CBD04C" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_12227A2544DEE7500A55DBD6E4CBDA99" xlink:to="loc_us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation_F894D45D62D50AF05B37DBD6E4CBD04C" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/DellAppraisalRightsMatter" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/DellAppraisalRightsMatterDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemLineItems" xlink:label="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemTable" xlink:label="loc_us-gaap_UnusualOrInfrequentItemTable_7A2AC1D08773EE11E0B8DBD6E26FDB17" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_us-gaap_UnusualOrInfrequentItemTable_7A2AC1D08773EE11E0B8DBD6E26FDB17" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_B6F13DEC8566D820BB78DBD6E26F8D85" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_7A2AC1D08773EE11E0B8DBD6E26FDB17" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_B6F13DEC8566D820BB78DBD6E26F8D85" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_38FEAA3AF6129E842AD0DBD6E26F3729_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_B6F13DEC8566D820BB78DBD6E26F8D85" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_38FEAA3AF6129E842AD0DBD6E26F3729_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_38FEAA3AF6129E842AD0DBD6E26F3729" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_B6F13DEC8566D820BB78DBD6E26F8D85" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_38FEAA3AF6129E842AD0DBD6E26F3729" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DellappraisalrightsmatterMember" xlink:label="loc_trow_DellappraisalrightsmatterMember_D0381FC1C08346BD6679DBD6E26FB02C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_38FEAA3AF6129E842AD0DBD6E26F3729" xlink:to="loc_trow_DellappraisalrightsmatterMember_D0381FC1C08346BD6679DBD6E26FB02C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemLossGross" xlink:label="loc_us-gaap_UnusualOrInfrequentItemLossGross_42A734B51DE34273ED6CDBD6E26FD634" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_us-gaap_UnusualOrInfrequentItemLossGross_42A734B51DE34273ED6CDBD6E26FD634" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_Courtdeterminedfairvaluepershare" xlink:label="loc_trow_Courtdeterminedfairvaluepershare_D144C2B6B63BCB916CEDDBD6E26F5C57" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_trow_Courtdeterminedfairvaluepershare_D144C2B6B63BCB916CEDDBD6E26F5C57" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_Priceofferedpershare" xlink:label="loc_trow_Priceofferedpershare_08DA4868B8EF1B0EB795DBD6E26FCCB8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_trow_Priceofferedpershare_08DA4868B8EF1B0EB795DBD6E26FCCB8" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_Paymentpershare" xlink:label="loc_trow_Paymentpershare_0C96C8A29C38231FE903DBD6E26F5403" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_trow_Paymentpershare_0C96C8A29C38231FE903DBD6E26F5403" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemInsuranceProceeds" xlink:label="loc_us-gaap_UnusualOrInfrequentItemInsuranceProceeds_F5FD8D3048A1AEBD807DDBD6E26FF581" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_us-gaap_UnusualOrInfrequentItemInsuranceProceeds_F5FD8D3048A1AEBD807DDBD6E26FF581" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainContingencyUnrecordedAmount" xlink:label="loc_us-gaap_GainContingencyUnrecordedAmount_EBA73A66422E04042A81DC4CD17BC84B" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_1DD5EED0F09A26C5370EDBD6E26FF739" xlink:to="loc_us-gaap_GainContingencyUnrecordedAmount_EBA73A66422E04042A81DC4CD17BC84B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/EarningsPerShareCalculations" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/EarningsPerShareCalculationsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/EarningsPerShareCalculationsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/FairValueMeasurements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/FairValueMeasurementsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_557DFFC7A9FDE62087889928D335DE93" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_557DFFC7A9FDE62087889928D335DE93" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_1FD180E5F71E976694E49928D335151E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_557DFFC7A9FDE62087889928D335DE93" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_1FD180E5F71E976694E49928D335151E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_1FD180E5F71E976694E49928D335151E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_1FD180E5F71E976694E49928D335151E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_0E69EC55EE593D25EB609928D3355210" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_0E69EC55EE593D25EB609928D3355210" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_538A99FC4AF9D019A44A9928D3352138" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B35DA5DBDF6D7011BAD9928D3359BFE" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_538A99FC4AF9D019A44A9928D3352138" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_0C9653D55762E02AD34F9928D3360A15" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_557DFFC7A9FDE62087889928D335DE93" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_0C9653D55762E02AD34F9928D3360A15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_BBA24AE60DCBF3AECA0E9928D3369C93_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_0C9653D55762E02AD34F9928D3360A15" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_BBA24AE60DCBF3AECA0E9928D3369C93_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_BBA24AE60DCBF3AECA0E9928D3369C93" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_0C9653D55762E02AD34F9928D3360A15" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_BBA24AE60DCBF3AECA0E9928D3369C93" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_AFEE4E507F8CFEE582E19928D336661D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_BBA24AE60DCBF3AECA0E9928D3369C93" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_AFEE4E507F8CFEE582E19928D336661D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_D485AC3673488D47B9899928D3363840" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_D485AC3673488D47B9899928D3363840" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_075A18BBD3316FAC18C49928D336ED3D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_075A18BBD3316FAC18C49928D336ED3D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_us-gaap_TradingSecurities_372AA6482922388830BC9928D336B050" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:to="loc_us-gaap_TradingSecurities_372AA6482922388830BC9928D336B050" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_97D5DF12BA3A38DAE6359928D336DD1D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C8717F2B8B5AE1DE54BF9928D3363A73" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_97D5DF12BA3A38DAE6359928D336DD1D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/FairValueMeasurementsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesChangesInUnrecognizedTaxBenefitsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesDeferredIncomeTaxesTaxBenefitsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesNetDeferredTaxAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_E5EDFE92EEDFA58C1FC7F0F976D217A2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F0C2C745AAB47BEF3DEBF0F976D256D7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_E5EDFE92EEDFA58C1FC7F0F976D217A2" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F0C2C745AAB47BEF3DEBF0F976D256D7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionAxis" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_B4A06A696ED11D83D58AF0F976D2FFD5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F0C2C745AAB47BEF3DEBF0F976D256D7" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_B4A06A696ED11D83D58AF0F976D2FFD5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_B66EBE82C7FA2FF1C14DF0F976D272CE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_B4A06A696ED11D83D58AF0F976D2FFD5" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_B66EBE82C7FA2FF1C14DF0F976D272CE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_B66EBE82C7FA2FF1C14DF0F976D272CE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_B4A06A696ED11D83D58AF0F976D2FFD5" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_B66EBE82C7FA2FF1C14DF0F976D272CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_F8B70B109CD60CB01981F0F976D2EECF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_B66EBE82C7FA2FF1C14DF0F976D272CE" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_F8B70B109CD60CB01981F0F976D2EECF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_80FC032745CDD04C5132F0F976D2A2BC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F0C2C745AAB47BEF3DEBF0F976D256D7" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_80FC032745CDD04C5132F0F976D2A2BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_80FC032745CDD04C5132F0F976D2A2BC" xlink:to="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_80FC032745CDD04C5132F0F976D2A2BC" xlink:to="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountingStandardsUpdate201502Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201502Member_E8BC3B0CD29A812EAB55F0F976D287E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666" xlink:to="loc_us-gaap_AccountingStandardsUpdate201502Member_E8BC3B0CD29A812EAB55F0F976D287E6" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember" xlink:label="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_83E04D81574BD259EAF7F0F976D26013" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_108CA042BBA450C1C061F0F976D29666" xlink:to="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_83E04D81574BD259EAF7F0F976D26013" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxLiabilitiesAbstract" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_E5EDFE92EEDFA58C1FC7F0F976D217A2" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_C00FD6EB3A8452B9B93CF0F976D29DA4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_C00FD6EB3A8452B9B93CF0F976D29DA4" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DeferredTaxLiabilitiesNetUnrealizedHoldingGainsRecognizedinIncome" xlink:label="loc_trow_DeferredTaxLiabilitiesNetUnrealizedHoldingGainsRecognizedinIncome_FAEAF675B26E3AE8CCA7F0F976D2D59D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:to="loc_trow_DeferredTaxLiabilitiesNetUnrealizedHoldingGainsRecognizedinIncome_FAEAF675B26E3AE8CCA7F0F976D2D59D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome_63D9B4F13CD31EBE9CF5F0F976D2BE2B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome_63D9B4F13CD31EBE9CF5F0F976D2BE2B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_67EB5986283E9A85D3E6F0F976DCFDED" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_67EB5986283E9A85D3E6F0F976DCFDED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_585E44FA150432F82489F0F976DC41B2" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_FAC87142F6E0153F3B32F0F976D27C8A" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_585E44FA150432F82489F0F976DC41B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsGrossAbstract" xlink:label="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_E5EDFE92EEDFA58C1FC7F0F976D217A2" xlink:to="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_84C52721A4B4ACBF5150F0F976DC3B51" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_84C52721A4B4ACBF5150F0F976DC3B51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses_47811A0CB57E630DD948F0F976DC08F7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses_47811A0CB57E630DD948F0F976DC08F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_DB1F9AC5F33CA827839AF0F976DC2CFD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_DB1F9AC5F33CA827839AF0F976DC2CFD" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DeferredTaxAssetsTaxDeferredExpenseCompensationandBenefitsDeferredCompensation" xlink:label="loc_trow_DeferredTaxAssetsTaxDeferredExpenseCompensationandBenefitsDeferredCompensation_723F30400F598C2AD801F101A1FA5B0C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_trow_DeferredTaxAssetsTaxDeferredExpenseCompensationandBenefitsDeferredCompensation_723F30400F598C2AD801F101A1FA5B0C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsOtherComprehensiveLoss" xlink:label="loc_us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_1EEB44B557422A8FD445F0F976DCDC5F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_1EEB44B557422A8FD445F0F976DCDC5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_A4DFDEAB4A44E9802E5BF0F976DC0620" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_A4DFDEAB4A44E9802E5BF0F976DC0620" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_5FC2ACEB9310371CFC32F0F976DC8A2F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_0F73ECD8F5EEE790CEB4F0F976DCBF3E" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_5FC2ACEB9310371CFC32F0F976DC8A2F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_70BCA706FE5580B79390F0F976DCBC2B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_E5EDFE92EEDFA58C1FC7F0F976D217A2" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_70BCA706FE5580B79390F0F976DCBC2B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesProvisionForIncomeTaxesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/IncomeTaxesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServices" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesInvestmentAdvisoryServicesDetails" xlink:type="extended">
    <link:loc xlink:href="trow-20161231.xsd#trow_RevenuesAndServicesLineItems" xlink:label="loc_trow_RevenuesAndServicesLineItems_EA89EFEBD08284C4C237791984870D36" xlink:type="locator" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RevenueAndServicesTable" xlink:label="loc_trow_RevenueAndServicesTable_263840A3BA39C97162DD791984874515" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_trow_RevenuesAndServicesLineItems_EA89EFEBD08284C4C237791984870D36" xlink:to="loc_trow_RevenueAndServicesTable_263840A3BA39C97162DD791984874515" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancialSupportToNonconsolidatedLegalEntityAxis" xlink:label="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityAxis_CC2D41D8D40E75AD13CB791984879C1A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trow_RevenueAndServicesTable_263840A3BA39C97162DD791984874515" xlink:to="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityAxis_CC2D41D8D40E75AD13CB791984879C1A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain" xlink:label="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain_DD16F2CC26C52FB63C967919848702E7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityAxis_CC2D41D8D40E75AD13CB791984879C1A" xlink:to="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain_DD16F2CC26C52FB63C967919848702E7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain" xlink:label="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain_DD16F2CC26C52FB63C967919848702E7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityAxis_CC2D41D8D40E75AD13CB791984879C1A" xlink:to="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain_DD16F2CC26C52FB63C967919848702E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancialSupportWaivedFeesMember" xlink:label="loc_us-gaap_FinancialSupportWaivedFeesMember_BBDBD93C8975AC2DEE517919848741E8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialSupportToNonconsolidatedLegalEntityDomain_DD16F2CC26C52FB63C967919848702E7" xlink:to="loc_us-gaap_FinancialSupportWaivedFeesMember_BBDBD93C8975AC2DEE517919848741E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_176F2D0964E0D58E6E4B791984870D48" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trow_RevenueAndServicesTable_263840A3BA39C97162DD791984874515" xlink:to="loc_us-gaap_MajorCustomersAxis_176F2D0964E0D58E6E4B791984870D48" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorCustomersAxis_176F2D0964E0D58E6E4B791984870D48" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorCustomersAxis_176F2D0964E0D58E6E4B791984870D48" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SponsoredMutualFundsInUSMember" xlink:label="loc_trow_SponsoredMutualFundsInUSMember_5FD30847039D08FB9FF9791984876E09" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486" xlink:to="loc_trow_SponsoredMutualFundsInUSMember_5FD30847039D08FB9FF9791984876E09" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OtherPortfoliosMember" xlink:label="loc_trow_OtherPortfoliosMember_E0A847725A25E740EF1C791984872D41" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_9C6CCC99B36C74BEFDF4791984870486" xlink:to="loc_trow_OtherPortfoliosMember_E0A847725A25E740EF1C791984872D41" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OtherSponsoredInvestmentPortfoliosMember" xlink:label="loc_trow_OtherSponsoredInvestmentPortfoliosMember_702AAB890D16482702DE7919848785DE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_OtherPortfoliosMember_E0A847725A25E740EF1C791984872D41" xlink:to="loc_trow_OtherSponsoredInvestmentPortfoliosMember_702AAB890D16482702DE7919848785DE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="loc_us-gaap_InvestmentTypeAxis_484B81BAE3D94181AB0C79198487B20D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trow_RevenueAndServicesTable_263840A3BA39C97162DD791984874515" xlink:to="loc_us-gaap_InvestmentTypeAxis_484B81BAE3D94181AB0C79198487B20D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_484B81BAE3D94181AB0C79198487B20D" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_484B81BAE3D94181AB0C79198487B20D" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockAndBlendedAssetMember" xlink:label="loc_trow_StockAndBlendedAssetMember_384D7A179954F6DF3799791984878ABE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E" xlink:to="loc_trow_StockAndBlendedAssetMember_384D7A179954F6DF3799791984878ABE" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_BondAndMoneyMarketMember" xlink:label="loc_trow_BondAndMoneyMarketMember_C8C1DDBC0DEF80907D58791984870653" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E" xlink:to="loc_trow_BondAndMoneyMarketMember_C8C1DDBC0DEF80907D58791984870653" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_BondMoneyMarketAndStableValueMember" xlink:label="loc_trow_BondMoneyMarketAndStableValueMember_08687ECC59E71085394479198487A300" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9CCAD3DED77070C1F60C791984876A5E" xlink:to="loc_trow_BondMoneyMarketAndStableValueMember_08687ECC59E71085394479198487A300" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentAdvisoryFees" xlink:label="loc_us-gaap_InvestmentAdvisoryFees_CFC5C6F25835E7ACEB3F791984877381" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RevenuesAndServicesLineItems_EA89EFEBD08284C4C237791984870D36" xlink:to="loc_us-gaap_InvestmentAdvisoryFees_CFC5C6F25835E7ACEB3F791984877381" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsUnderManagementAverageBalance" xlink:label="loc_us-gaap_AssetsUnderManagementAverageBalance_E3FC005F39744EA2643179198488CED8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RevenuesAndServicesLineItems_EA89EFEBD08284C4C237791984870D36" xlink:to="loc_us-gaap_AssetsUnderManagementAverageBalance_E3FC005F39744EA2643179198488CED8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsUnderManagementCarryingAmount" xlink:label="loc_us-gaap_AssetsUnderManagementCarryingAmount_431A2CF9F2511B0CEEFD791984888907" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RevenuesAndServicesLineItems_EA89EFEBD08284C4C237791984870D36" xlink:to="loc_us-gaap_AssetsUnderManagementCarryingAmount_431A2CF9F2511B0CEEFD791984888907" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesOtherFeesEarnedFromSponsoredUSMutualFundsDetails" xlink:type="extended">
    <link:loc xlink:href="trow-20161231.xsd#trow_RevenuesAndServicesLineItems" xlink:label="loc_trow_RevenuesAndServicesLineItems_D471F5BA1EF78D15EA9CB8B92D837EAF" xlink:type="locator" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RevenueAndServicesTable" xlink:label="loc_trow_RevenueAndServicesTable_656BED7237CF0F2B626EB8B92D83C6B5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_trow_RevenuesAndServicesLineItems_D471F5BA1EF78D15EA9CB8B92D837EAF" xlink:to="loc_trow_RevenueAndServicesTable_656BED7237CF0F2B626EB8B92D83C6B5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_5FBF947EC918C7965183B8B92D8316A7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trow_RevenueAndServicesTable_656BED7237CF0F2B626EB8B92D83C6B5" xlink:to="loc_us-gaap_MajorCustomersAxis_5FBF947EC918C7965183B8B92D8316A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_1A8782B53262ED7F6C1CB8B92D830CA3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorCustomersAxis_5FBF947EC918C7965183B8B92D8316A7" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_1A8782B53262ED7F6C1CB8B92D830CA3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_1A8782B53262ED7F6C1CB8B92D830CA3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorCustomersAxis_5FBF947EC918C7965183B8B92D8316A7" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_1A8782B53262ED7F6C1CB8B92D830CA3" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SponsoredMutualFundsInUSMember" xlink:label="loc_trow_SponsoredMutualFundsInUSMember_C084DF31FC4ABBD6366DB8B92D83A5C0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_1A8782B53262ED7F6C1CB8B92D830CA3" xlink:to="loc_trow_SponsoredMutualFundsInUSMember_C084DF31FC4ABBD6366DB8B92D83A5C0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdministrativeServicesRevenue" xlink:label="loc_us-gaap_AdministrativeServicesRevenue_362980997B81FF8E821CB8B92D83B435" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RevenuesAndServicesLineItems_D471F5BA1EF78D15EA9CB8B92D837EAF" xlink:to="loc_us-gaap_AdministrativeServicesRevenue_362980997B81FF8E821CB8B92D83B435" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DistributionFees" xlink:label="loc_us-gaap_DistributionFees_F51E73560BA4AD31DC34B8B92D831E21" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RevenuesAndServicesLineItems_D471F5BA1EF78D15EA9CB8B92D837EAF" xlink:to="loc_us-gaap_DistributionFees_F51E73560BA4AD31DC34B8B92D831E21" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesReceivablesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_42874A87973DC56C4EB27919848AB3EA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_61814391C266C14EC32D7919848A5A38" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_42874A87973DC56C4EB27919848AB3EA" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_61814391C266C14EC32D7919848A5A38" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_4484EA3CF7F34940AC817919848AB7F5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_61814391C266C14EC32D7919848A5A38" xlink:to="loc_us-gaap_MajorCustomersAxis_4484EA3CF7F34940AC817919848AB7F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_63D2EFDDA1A080296A327919848A86DC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorCustomersAxis_4484EA3CF7F34940AC817919848AB7F5" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_63D2EFDDA1A080296A327919848A86DC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_63D2EFDDA1A080296A327919848A86DC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorCustomersAxis_4484EA3CF7F34940AC817919848AB7F5" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_63D2EFDDA1A080296A327919848A86DC" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SponsoredU.S.MutualFundsandOtherSponsoredInvestmentPortfoliosMember" xlink:label="loc_trow_SponsoredU.S.MutualFundsandOtherSponsoredInvestmentPortfoliosMember_05C5BDEC4C3160497B9B7919848A7DCB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_63D2EFDDA1A080296A327919848A86DC" xlink:to="loc_trow_SponsoredU.S.MutualFundsandOtherSponsoredInvestmentPortfoliosMember_05C5BDEC4C3160497B9B7919848A7DCB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_A58F22017855D66B06A57919848AB2F6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_42874A87973DC56C4EB27919848AB3EA" xlink:to="loc_us-gaap_AccountsReceivableNet_A58F22017855D66B06A57919848AB2F6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesRevenuesAndServicesConcentrationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_63EEB8B6D579CEC4DFB5791984830A8A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_63EEB8B6D579CEC4DFB5791984830A8A" xlink:to="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_D58B76453A33E5F8BA2C791984823E4D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:to="loc_us-gaap_StatementGeographicalAxis_D58B76453A33E5F8BA2C791984823E4D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_D334E5553C08255C6EBA79198482D677_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis_D58B76453A33E5F8BA2C791984823E4D" xlink:to="loc_us-gaap_SegmentGeographicalDomain_D334E5553C08255C6EBA79198482D677_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_D334E5553C08255C6EBA79198482D677" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis_D58B76453A33E5F8BA2C791984823E4D" xlink:to="loc_us-gaap_SegmentGeographicalDomain_D334E5553C08255C6EBA79198482D677" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_B12750AA069A2515FC8779198482A812" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_D334E5553C08255C6EBA79198482D677" xlink:to="loc_us-gaap_NonUsMember_B12750AA069A2515FC8779198482A812" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_062695E0761AAB3449DA79198482C85D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_062695E0761AAB3449DA79198482C85D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_F27C51DF987B181258FF79198482E894_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_062695E0761AAB3449DA79198482C85D" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_F27C51DF987B181258FF79198482E894_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_F27C51DF987B181258FF79198482E894" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_062695E0761AAB3449DA79198482C85D" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_F27C51DF987B181258FF79198482E894" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AssetsUnderManagementMember" xlink:label="loc_trow_AssetsUnderManagementMember_FBE6EC5BC1037D46F520791984823306" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_F27C51DF987B181258FF79198482E894" xlink:to="loc_trow_AssetsUnderManagementMember_FBE6EC5BC1037D46F520791984823306" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_9B90721444D2441E8561791984823CDE" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:to="loc_us-gaap_MajorCustomersAxis_9B90721444D2441E8561791984823CDE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_3E75205233441A821E0C791984826DF0_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorCustomersAxis_9B90721444D2441E8561791984823CDE" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_3E75205233441A821E0C791984826DF0_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_3E75205233441A821E0C791984826DF0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorCustomersAxis_9B90721444D2441E8561791984823CDE" xlink:to="loc_us-gaap_NameOfMajorCustomerDomain_3E75205233441A821E0C791984826DF0" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_InvestmentAdvisoryClientsMember" xlink:label="loc_trow_InvestmentAdvisoryClientsMember_94A134314310386F8AF0791984830E75" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_3E75205233441A821E0C791984826DF0" xlink:to="loc_trow_InvestmentAdvisoryClientsMember_94A134314310386F8AF0791984830E75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_33BAD3A8ED9195852BD379198483ADF9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_63C347CD0CFFB29F232B791984823845" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_33BAD3A8ED9195852BD379198483ADF9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_817287FF736334793C667919848318C0_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_33BAD3A8ED9195852BD379198483ADF9" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_817287FF736334793C667919848318C0_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_817287FF736334793C667919848318C0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_33BAD3A8ED9195852BD379198483ADF9" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_817287FF736334793C667919848318C0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GeographicConcentrationRiskMember" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_397C45274C8A201105DF79198483B402" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_817287FF736334793C667919848318C0" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_397C45274C8A201105DF79198483B402" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_D91E6054E95E8B3C8707791984830DDA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_63EEB8B6D579CEC4DFB5791984830A8A" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_D91E6054E95E8B3C8707791984830DDA" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InformationAboutReceivablesRevenuesAndServicesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/Investments" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_BEFE96551BA0AB745D2D87964078D860" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_BEFE96551BA0AB745D2D87964078D860" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_8308F36928DC744A9F7A87964078E45C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_BEFE96551BA0AB745D2D87964078D860" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_8308F36928DC744A9F7A87964078E45C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_8308F36928DC744A9F7A87964078E45C" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_8308F36928DC744A9F7A87964078E45C" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityFundsMember" xlink:label="loc_us-gaap_EquityFundsMember_9BE74FBF1B63662243A287964088FFEA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82" xlink:to="loc_us-gaap_EquityFundsMember_9BE74FBF1B63662243A287964088FFEA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FixedIncomeFundsMember" xlink:label="loc_us-gaap_FixedIncomeFundsMember_4A988C8C8213F76447E3879640889418" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_AE0286314CBB915ABBFC87964078AD82" xlink:to="loc_us-gaap_FixedIncomeFundsMember_4A988C8C8213F76447E3879640889418" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_27B21FF52AD7C90ADBC787964088BF35" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:to="loc_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_27B21FF52AD7C90ADBC787964088BF35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="loc_us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax_AB496BE7CE6ECAB77FCA879640882ABC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:to="loc_us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax_AB496BE7CE6ECAB77FCA879640882ABC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="loc_us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax_96DA44811ABAB24A09AC87964088DA27" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:to="loc_us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax_96DA44811ABAB24A09AC87964088DA27" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_ADBB8CD4E97446FFB03C8796408899E1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_532A32D101AF5A77EE8987964088E7B2" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_ADBB8CD4E97446FFB03C8796408899E1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsDividendsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_24507A432190CC5BB72C6A83E6DE99D8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_EF623810B920FFFC24ED6A83E6DE5C59" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_24507A432190CC5BB72C6A83E6DE99D8" xlink:to="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_EF623810B920FFFC24ED6A83E6DE5C59" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsAxis" xlink:label="loc_us-gaap_DividendsAxis_99E979B652234B8302946A868B128974" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_EF623810B920FFFC24ED6A83E6DE5C59" xlink:to="loc_us-gaap_DividendsAxis_99E979B652234B8302946A868B128974" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsDomain" xlink:label="loc_us-gaap_DividendsDomain_2380EA565A813564B8E16A868B1228A6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DividendsAxis_99E979B652234B8302946A868B128974" xlink:to="loc_us-gaap_DividendsDomain_2380EA565A813564B8E16A868B1228A6_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsDomain" xlink:label="loc_us-gaap_DividendsDomain_2380EA565A813564B8E16A868B1228A6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DividendsAxis_99E979B652234B8302946A868B128974" xlink:to="loc_us-gaap_DividendsDomain_2380EA565A813564B8E16A868B1228A6" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OrdinaryDividendMember" xlink:label="loc_trow_OrdinaryDividendMember_73112A090E5BAC75758E6A86C03A1D89" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DividendsDomain_2380EA565A813564B8E16A868B1228A6" xlink:to="loc_trow_OrdinaryDividendMember_73112A090E5BAC75758E6A86C03A1D89" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainLossOnInvestmentsByCategoryAxis" xlink:label="loc_us-gaap_GainLossOnInvestmentsByCategoryAxis_D4FBE767496E65CA57BC6A843DD0F006" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_EF623810B920FFFC24ED6A83E6DE5C59" xlink:to="loc_us-gaap_GainLossOnInvestmentsByCategoryAxis_D4FBE767496E65CA57BC6A843DD0F006" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain" xlink:label="loc_us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain_75DE92D39366C643471E6A85006F7D76_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GainLossOnInvestmentsByCategoryAxis_D4FBE767496E65CA57BC6A843DD0F006" xlink:to="loc_us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain_75DE92D39366C643471E6A85006F7D76_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain" xlink:label="loc_us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain_75DE92D39366C643471E6A85006F7D76" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GainLossOnInvestmentsByCategoryAxis_D4FBE767496E65CA57BC6A843DD0F006" xlink:to="loc_us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain_75DE92D39366C643471E6A85006F7D76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableforsaleSecuritiesMember" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_5EBF209C6B11E63A13086A854A66C920" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain_75DE92D39366C643471E6A85006F7D76" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_5EBF209C6B11E63A13086A854A66C920" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentIncomeDividend" xlink:label="loc_us-gaap_InvestmentIncomeDividend_D0D29A3404072B14AB226A863BBBF3BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_24507A432190CC5BB72C6A83E6DE99D8" xlink:to="loc_us-gaap_InvestmentIncomeDividend_D0D29A3404072B14AB226A863BBBF3BE" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentLineItems" xlink:label="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentTable" xlink:label="loc_invest_InvestmentTable_4BA6284A7EB586C3F0A401BE17658637" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_invest_InvestmentTable_4BA6284A7EB586C3F0A401BE17658637" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_7459AF98D887BE75327701BE1765F814" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_invest_InvestmentTable_4BA6284A7EB586C3F0A401BE17658637" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_7459AF98D887BE75327701BE1765F814" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_251A374DECD3F420F4DB01BE176519F7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7459AF98D887BE75327701BE1765F814" xlink:to="loc_us-gaap_EquityComponentDomain_251A374DECD3F420F4DB01BE176519F7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_251A374DECD3F420F4DB01BE176519F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7459AF98D887BE75327701BE1765F814" xlink:to="loc_us-gaap_EquityComponentDomain_251A374DECD3F420F4DB01BE176519F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_FD2F13B1B74EADDA712001BE1765AE40" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_251A374DECD3F420F4DB01BE176519F7" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_FD2F13B1B74EADDA712001BE1765AE40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_0AA3F2802A53C048936C01BE17658C7A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_invest_InvestmentTable_4BA6284A7EB586C3F0A401BE17658637" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_0AA3F2802A53C048936C01BE17658C7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_C2DBE860FF70F505582401BE17654E33_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_0AA3F2802A53C048936C01BE17658C7A" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_C2DBE860FF70F505582401BE17654E33_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_C2DBE860FF70F505582401BE17654E33" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_0AA3F2802A53C048936C01BE17658C7A" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_C2DBE860FF70F505582401BE17654E33" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_5AA09D49A9DF400531E201BE176565F5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_C2DBE860FF70F505582401BE17654E33" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_5AA09D49A9DF400531E201BE176565F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_BEC9EB82E6241852D07F01BE176565D9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_invest_InvestmentTable_4BA6284A7EB586C3F0A401BE17658637" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_BEC9EB82E6241852D07F01BE176565D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_BEC9EB82E6241852D07F01BE176565D9" xlink:to="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_BEC9EB82E6241852D07F01BE176565D9" xlink:to="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SponsoredInvestmentPortfoliosMember" xlink:label="loc_trow_SponsoredInvestmentPortfoliosMember_672BE865D0D2D8914F6601BE176593A9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD" xlink:to="loc_trow_SponsoredInvestmentPortfoliosMember_672BE865D0D2D8914F6601BE176593A9" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_UtiAssetManagementCompanyIndiaMember" xlink:label="loc_trow_UtiAssetManagementCompanyIndiaMember_6BB1E2A1B4FB43D760EC01BE17659C56" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD" xlink:to="loc_trow_UtiAssetManagementCompanyIndiaMember_6BB1E2A1B4FB43D760EC01BE17659C56" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OtherEquityMethodInvestmentsMember" xlink:label="loc_trow_OtherEquityMethodInvestmentsMember_F203DB678459917DA25001BE17653A47" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain_5B36316E382AFD63475701BE1765BBBD" xlink:to="loc_trow_OtherEquityMethodInvestmentsMember_F203DB678459917DA25001BE17653A47" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_0C7C95E29028EFFA165E01BE1765F974" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesEquitySecurities_0C7C95E29028EFFA165E01BE1765F974" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_E588C1408C774F2FDD6301BE17659C60" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_EquityMethodInvestments_E588C1408C774F2FDD6301BE17659C60" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_us-gaap_TradingSecurities_92DDE7E96485195D3DA501BE1765032F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_TradingSecurities_92DDE7E96485195D3DA501BE1765032F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CostMethodInvestments" xlink:label="loc_us-gaap_CostMethodInvestments_937CA8C16A5A2D67474901BE17655D84" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_CostMethodInvestments_937CA8C16A5A2D67474901BE17655D84" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_us-gaap_HeldToMaturitySecurities_50CBF31DAEC3CE36078001BE176507C3" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_HeldToMaturitySecurities_50CBF31DAEC3CE36078001BE176507C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Investments" xlink:label="loc_us-gaap_Investments_0D57952330AF77BDD23C01BE1765D454" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_Investments_0D57952330AF77BDD23C01BE1765D454" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_DE17AA7E72B4C80F3E6D01BE1765693F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_DE17AA7E72B4C80F3E6D01BE1765693F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_0E8C6EBC962CEDC50EA401BE1765F98C" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_0E8C6EBC962CEDC50EA401BE1765F98C" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ResidualInterestAfterDeconsolidation" xlink:label="loc_trow_ResidualInterestAfterDeconsolidation_400CD84F1CA650F3519901BE17657933" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentLineItems_0F4CD13C35426170B87101BE1765DE3F" xlink:to="loc_trow_ResidualInterestAfterDeconsolidation_400CD84F1CA650F3519901BE17657933" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsUnrealizedLossesOnAvailableForSaleSponsoredInvestmentPortfoliosDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/InvestmentsVariableInterestEntitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityLineItems" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_2664E1ABCE26F0E4FB9F04B4186F32EA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_2664E1ABCE26F0E4FB9F04B4186F32EA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:label="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_53B1AB2F1B7D102E426A04B4186FA2E1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_2664E1ABCE26F0E4FB9F04B4186F32EA" xlink:to="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_53B1AB2F1B7D102E426A04B4186FA2E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_A3E81C6532897865746704B4186F9456_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_53B1AB2F1B7D102E426A04B4186FA2E1" xlink:to="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_A3E81C6532897865746704B4186F9456_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_A3E81C6532897865746704B4186F9456" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_53B1AB2F1B7D102E426A04B4186FA2E1" xlink:to="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_A3E81C6532897865746704B4186F9456" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_05815EE1ED140573C58D04B4186F16AE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_A3E81C6532897865746704B4186F9456" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_05815EE1ED140573C58D04B4186F16AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets" xlink:label="loc_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_078BFE896E694D25247104B4186FA0AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_078BFE896E694D25247104B4186FA0AD" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureInvestmentCarryingValuesAmount" xlink:label="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureInvestmentCarryingValuesAmount_78FE784EF977B9EF2B5B04B97D07D45C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureInvestmentCarryingValuesAmount_78FE784EF977B9EF2B5B04B97D07D45C" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUnfundedCapitalCommitmentsAmount" xlink:label="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUnfundedCapitalCommitmentsAmount_E607ECF2B2CF72A5E1A204B4186F61E3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUnfundedCapitalCommitmentsAmount_E607ECF2B2CF72A5E1A204B4186F61E3" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUncollectedInvestmentAdvisoryandAdministrativeFeesAmount" xlink:label="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUncollectedInvestmentAdvisoryandAdministrativeFeesAmount_B3B3CA2DE396BC12ECEE04B41870910D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_trow_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureUncollectedInvestmentAdvisoryandAdministrativeFeesAmount_B3B3CA2DE396BC12ECEE04B41870910D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_016C976B6BA78E41905A04B41870DF38" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_20E7344231FD23F0931404B4186F7995" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_016C976B6BA78E41905A04B41870DF38" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncome" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A01F204D4A703D8B7C63DBD6E2B90CDF" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1B738142927DF202F8EDDBD6E2B954DF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A01F204D4A703D8B7C63DBD6E2B90CDF" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1B738142927DF202F8EDDBD6E2B954DF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_07B69CB60F5146E10712DBD6E2B97B11" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1B738142927DF202F8EDDBD6E2B954DF" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_07B69CB60F5146E10712DBD6E2B97B11" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_07B69CB60F5146E10712DBD6E2B97B11" xlink:to="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_07B69CB60F5146E10712DBD6E2B97B11" xlink:to="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_D399EEBE66EB129F1CFFDBD6E2B9001B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_D399EEBE66EB129F1CFFDBD6E2B9001B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_5FEACF38F8AD91A0F855DBD6E2B9825D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_5FEACF38F8AD91A0F855DBD6E2B9825D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_97E96A0E6D6558374D4BDBD6E2B9B7BB" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_CE71B9328050A4675FBADBD6E2B99D2F" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_97E96A0E6D6558374D4BDBD6E2B9B7BB" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_060E4EB8C3023EF23D68DBD6E2B9BE47" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1B738142927DF202F8EDDBD6E2B954DF" xlink:to="loc_trow_ConsolidatedEntitiesAxis_060E4EB8C3023EF23D68DBD6E2B9BE47" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_060E4EB8C3023EF23D68DBD6E2B9BE47" xlink:to="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_060E4EB8C3023EF23D68DBD6E2B9BE47" xlink:to="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityMethodInvesteeMember" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_81E439C2A7946804D53ADBD6E2B9C340" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_81E439C2A7946804D53ADBD6E2B9C340" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_517E8F92CFF004479926DBD6E2B97D13" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_8B62E5FDA24258F0A00BDBD6E2B9371C" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_517E8F92CFF004479926DBD6E2B97D13" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_49868C6038BB03A98060DBD6E2B9F849" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1B738142927DF202F8EDDBD6E2B954DF" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_49868C6038BB03A98060DBD6E2B9F849" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_0759392C8C7394BC6764DBD6E2B9C7E3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_49868C6038BB03A98060DBD6E2B9F849" xlink:to="loc_us-gaap_TypeOfAdoptionMember_0759392C8C7394BC6764DBD6E2B9C7E3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_0759392C8C7394BC6764DBD6E2B9C7E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_49868C6038BB03A98060DBD6E2B9F849" xlink:to="loc_us-gaap_TypeOfAdoptionMember_0759392C8C7394BC6764DBD6E2B9C7E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountingStandardsUpdate201502Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201502Member_954CEB9622425CF04540DBD6E2B9C457" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_0759392C8C7394BC6764DBD6E2B9C7E3" xlink:to="loc_us-gaap_AccountingStandardsUpdate201502Member_954CEB9622425CF04540DBD6E2B9C457" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A01F204D4A703D8B7C63DBD6E2B90CDF" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_ECBB9DD798225835935EDBD6E2B902E8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_StockholdersEquity_ECBB9DD798225835935EDBD6E2B902E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_E87B7F28B3FBE32086DADBD6E2B9ADDA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_E87B7F28B3FBE32086DADBD6E2B9ADDA" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockholdersEquityAttributabletoParentAdjustedBalance" xlink:label="loc_trow_StockholdersEquityAttributabletoParentAdjustedBalance_784EF40EA5BCB8663435DBD6E2B905B7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_trow_StockholdersEquityAttributabletoParentAdjustedBalance_784EF40EA5BCB8663435DBD6E2B905B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_00178AE8EC7685C94D9DDBD6E2B937EF" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_00178AE8EC7685C94D9DDBD6E2B937EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_ABD4F066BCB5E28709C7DBD6E2B9086F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_ABD4F066BCB5E28709C7DBD6E2B9086F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_C1A51DED53B14777F3E2DBD6E2B9BFEC" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_C1A51DED53B14777F3E2DBD6E2B9BFEC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_0C96036B1327330D0B61DBD6E2B9B2D6" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_0C96036B1327330D0B61DBD6E2B9B2D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_93EC25DA72610AFC1133DBD6E2B9F7DE" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90446E293FBCE82FC171DBD6E2B9586D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_93EC25DA72610AFC1133DBD6E2B9F7DE" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeDeferredTaxBenefitsIncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A93180811E1FCACB20249928D25C830D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_DD0788E670CDF999C15F9928D25CD5FB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A93180811E1FCACB20249928D25C830D" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_DD0788E670CDF999C15F9928D25CD5FB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_77CB7D62D1B2D75655AE9928D25C8DE0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_DD0788E670CDF999C15F9928D25CD5FB" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_77CB7D62D1B2D75655AE9928D25C8DE0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_77CB7D62D1B2D75655AE9928D25C8DE0" xlink:to="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_77CB7D62D1B2D75655AE9928D25C8DE0" xlink:to="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7440B77544B7EAB8E31F9928D25C7024" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7440B77544B7EAB8E31F9928D25C7024" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember_5FF970E833B7B56BB0A09928D25C5C90" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7440B77544B7EAB8E31F9928D25C7024" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember_5FF970E833B7B56BB0A09928D25C5C90" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember_94FEF1436416DF1E3D2A9928D25C2F8D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7440B77544B7EAB8E31F9928D25C7024" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember_94FEF1436416DF1E3D2A9928D25C2F8D" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember_4DB427A77C7144647DE99928D25CE810" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7440B77544B7EAB8E31F9928D25C7024" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember_4DB427A77C7144647DE99928D25CE810" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_523365DC45E6B38F33B89928D25C4768" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_523365DC45E6B38F33B89928D25C4768" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_86BAB8D2EA6ECD13ABC59928D25CE498" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_19B76F308EE3A3DB60BA9928D25CFB1E" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_86BAB8D2EA6ECD13ABC59928D25CE498" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_6FBA5E29D1F3A18A46D39928D25C2F4A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A93180811E1FCACB20249928D25C830D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_6FBA5E29D1F3A18A46D39928D25C2F4A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_4998D5114880573D51499928D25C97FB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A93180811E1FCACB20249928D25C830D" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_4998D5114880573D51499928D25C97FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_0E53634FECD8422F7B509928D25C7EBD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A93180811E1FCACB20249928D25C830D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_0E53634FECD8422F7B509928D25C7EBD" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeReclassificationAdjustmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_058934B947795E9037E59928D24DE1A2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_D4F2F3BF7F046CA0C1BC9928D24DCDF0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_058934B947795E9037E59928D24DE1A2" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_D4F2F3BF7F046CA0C1BC9928D24DCDF0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_967C2A7EAAE973DF82729928D24DB600" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_D4F2F3BF7F046CA0C1BC9928D24DCDF0" xlink:to="loc_trow_ConsolidatedEntitiesAxis_967C2A7EAAE973DF82729928D24DB600" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_4EF0440C04A1B562453B9928D24D3C74_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_967C2A7EAAE973DF82729928D24DB600" xlink:to="loc_trow_ConsolidatedEntitiesDomain_4EF0440C04A1B562453B9928D24D3C74_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_4EF0440C04A1B562453B9928D24D3C74" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_967C2A7EAAE973DF82729928D24DB600" xlink:to="loc_trow_ConsolidatedEntitiesDomain_4EF0440C04A1B562453B9928D24D3C74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_155A58B5274C5587C1089928D24D212D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_4EF0440C04A1B562453B9928D24D3C74" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_155A58B5274C5587C1089928D24D212D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_666EA3810839BD1DA9F19928D24D92CB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_D4F2F3BF7F046CA0C1BC9928D24DCDF0" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_666EA3810839BD1DA9F19928D24D92CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_666EA3810839BD1DA9F19928D24D92CB" xlink:to="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_666EA3810839BD1DA9F19928D24D92CB" xlink:to="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_33107BADD111402DE9AB9928D24D2CB8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_33107BADD111402DE9AB9928D24D2CB8" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember_1D817D9FFE1412B655359928D24DCC46" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_33107BADD111402DE9AB9928D24D2CB8" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossCapitalGainsLossesDistributionsAttributabletoParentMember_1D817D9FFE1412B655359928D24DCC46" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember_138730400ACF4FABEBB09928D24D58BE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_33107BADD111402DE9AB9928D24D2CB8" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossNetGainsLossesRealizedonDispositionsofSecuritiesAttributabletoParentMember_138730400ACF4FABEBB09928D24D58BE" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember" xlink:label="loc_trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember_0FD9F3D60F1BE06CD8109928D24DFB91" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_33107BADD111402DE9AB9928D24D2CB8" xlink:to="loc_trow_AccumulatedNetInvestmentGainLossOtherThanTemporaryImpairmentsAttributabletoParentMember_0FD9F3D60F1BE06CD8109928D24DFB91" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_EBEFFA4F300046BD3DE99928D24D0C23" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_EBEFFA4F300046BD3DE99928D24D0C23" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1CA76A08E7CBEF25E3F89928D24DAC9E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F8423FAAA889B6FD46EA9928D24DB48E" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1CA76A08E7CBEF25E3F89928D24DAC9E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_139E67504D42C215AEA49928D24D5134" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_D4F2F3BF7F046CA0C1BC9928D24DCDF0" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_139E67504D42C215AEA49928D24D5134" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6A7D67B78D2F48FB44DE9928D24D7414_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_139E67504D42C215AEA49928D24D5134" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6A7D67B78D2F48FB44DE9928D24D7414_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6A7D67B78D2F48FB44DE9928D24D7414" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_139E67504D42C215AEA49928D24D5134" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6A7D67B78D2F48FB44DE9928D24D7414" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03D9C921CD11FA52196A9928D24D8D11" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6A7D67B78D2F48FB44DE9928D24D7414" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03D9C921CD11FA52196A9928D24D8D11" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_2E626849BD21776A2B199928D24D2D9F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_058934B947795E9037E59928D24DE1A2" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_2E626849BD21776A2B199928D24D2D9F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_67A4B6B6856E0C877FDE9928D24D46F7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_058934B947795E9037E59928D24DE1A2" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_67A4B6B6856E0C877FDE9928D24D46F7" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherComprehensiveIncomeAndAccumulatedOtherComprehensiveIncomeTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherDisclosures" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/OtherDisclosuresDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable" xlink:label="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_A732D0375A658C9F7F5D14C55BD71741" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_A732D0375A658C9F7F5D14C55BD71741" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_161C65C09D704EB72A1C14C55BD8BA16" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_A732D0375A658C9F7F5D14C55BD71741" xlink:to="loc_us-gaap_RangeAxis_161C65C09D704EB72A1C14C55BD8BA16" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_40642D1BA3BD959EFF2B14C55BD87BA9_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_161C65C09D704EB72A1C14C55BD8BA16" xlink:to="loc_us-gaap_RangeMember_40642D1BA3BD959EFF2B14C55BD87BA9_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_40642D1BA3BD959EFF2B14C55BD87BA9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_161C65C09D704EB72A1C14C55BD8BA16" xlink:to="loc_us-gaap_RangeMember_40642D1BA3BD959EFF2B14C55BD87BA9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_7AA65E8DB658437C87B414C55BD83D6F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_40642D1BA3BD959EFF2B14C55BD87BA9" xlink:to="loc_us-gaap_MaximumMember_7AA65E8DB658437C87B414C55BD83D6F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis_FF2E250B6962E028A6F614C55BD83A1D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_A732D0375A658C9F7F5D14C55BD71741" xlink:to="loc_us-gaap_TitleOfIndividualAxis_FF2E250B6962E028A6F614C55BD83A1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_690C6C7333387D935E3214C55BD80934_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TitleOfIndividualAxis_FF2E250B6962E028A6F614C55BD83A1D" xlink:to="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_690C6C7333387D935E3214C55BD80934_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_690C6C7333387D935E3214C55BD80934" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TitleOfIndividualAxis_FF2E250B6962E028A6F614C55BD83A1D" xlink:to="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_690C6C7333387D935E3214C55BD80934" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ExecutiveOfficerMember" xlink:label="loc_us-gaap_ExecutiveOfficerMember_A89A5C95485544C6EDD314C55BD8FF91" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_690C6C7333387D935E3214C55BD80934" xlink:to="loc_us-gaap_ExecutiveOfficerMember_A89A5C95485544C6EDD314C55BD8FF91" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_481141F0D896377ABDCC14C55BD8304A" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_A732D0375A658C9F7F5D14C55BD71741" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_481141F0D896377ABDCC14C55BD8304A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_CBA76D1CA7A11EEA6C4B14C55BD8D207_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_481141F0D896377ABDCC14C55BD8304A" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_CBA76D1CA7A11EEA6C4B14C55BD8D207_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_CBA76D1CA7A11EEA6C4B14C55BD8D207" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_481141F0D896377ABDCC14C55BD8304A" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_CBA76D1CA7A11EEA6C4B14C55BD8D207" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredBonusMember" xlink:label="loc_us-gaap_DeferredBonusMember_6C292A54741771C1F76114C55BD818E8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_CBA76D1CA7A11EEA6C4B14C55BD8D207" xlink:to="loc_us-gaap_DeferredBonusMember_6C292A54741771C1F76114C55BD818E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_A00C617EBDF02E6B887714C55BD850C9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_A00C617EBDF02E6B887714C55BD850C9" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DeferredCompensationArrangementwithIndividualCashAwardsGrantedPercentageDeferred" xlink:label="loc_trow_DeferredCompensationArrangementwithIndividualCashAwardsGrantedPercentageDeferred_2BC56B98FAABDFF1D6E314C55BD8271B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_trow_DeferredCompensationArrangementwithIndividualCashAwardsGrantedPercentageDeferred_2BC56B98FAABDFF1D6E314C55BD8271B" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DeferredCompensationArrangementwithIndividualInitialMinimumContractualTerm" xlink:label="loc_trow_DeferredCompensationArrangementwithIndividualInitialMinimumContractualTerm_7B674725F5C4E367485414C55BD8330E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_trow_DeferredCompensationArrangementwithIndividualInitialMinimumContractualTerm_7B674725F5C4E367485414C55BD8330E" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DeferredCompensationArrangementwithIndividualInitialMaximumContractualTerm" xlink:label="loc_trow_DeferredCompensationArrangementwithIndividualInitialMaximumContractualTerm_82E95DB6DC66F34F50ED14C55BD8132D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_trow_DeferredCompensationArrangementwithIndividualInitialMaximumContractualTerm_82E95DB6DC66F34F50ED14C55BD8132D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount_D31DF4A4CA23072AA10F14C55BD834B1" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_66FC943237E2A9B47CAA14C55BD8E4BD" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount_D31DF4A4CA23072AA10F14C55BD834B1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/PropertyAndEquipment" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/PropertyAndEquipmentLeasedDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/PropertyAndEquipmentOwnedDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_BB5B23DFBD4BC408C8CD657FA499FAF9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_BB5B23DFBD4BC408C8CD657FA499FAF9" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_80232AF17C29691BDE44657FA4A9CDF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_BB5B23DFBD4BC408C8CD657FA499FAF9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_80232AF17C29691BDE44657FA4A9CDF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_80232AF17C29691BDE44657FA4A9CDF5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_80232AF17C29691BDE44657FA4A9CDF5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ComputerAndCommunicationsSoftwareAndEquipmentMember" xlink:label="loc_trow_ComputerAndCommunicationsSoftwareAndEquipmentMember_940B5C7488E0EF0DD683657FA4A9C46B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_trow_ComputerAndCommunicationsSoftwareAndEquipmentMember_940B5C7488E0EF0DD683657FA4A9C46B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_6591E36B6885D0C76A8C657FA4A9E604" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_6591E36B6885D0C76A8C657FA4A9E604" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_875346B94F3FAC74E6E2657FA4A93020" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_875346B94F3FAC74E6E2657FA4A93020" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_87A08967FC6DAEB10B76657FA4A9768C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_87A08967FC6DAEB10B76657FA4A9768C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_BE44ACD9CD05858BD149657FA4A96285" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_us-gaap_LandMember_BE44ACD9CD05858BD149657FA4A96285" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_LeasedLandMember" xlink:label="loc_trow_LeasedLandMember_DC428DCF2D315EC110E565C6BFF2AAE3" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_trow_LeasedLandMember_DC428DCF2D315EC110E565C6BFF2AAE3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SoftwareDevelopmentMember" xlink:label="loc_us-gaap_SoftwareDevelopmentMember_BBFB8C4CEBA8063FA67C65CAC5FCE249" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D1953E0385CAEFE948C8657FA4A9C3D5" xlink:to="loc_us-gaap_SoftwareDevelopmentMember_BBFB8C4CEBA8063FA67C65CAC5FCE249" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_731B8DC8654B0C19894465953D60355F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_731B8DC8654B0C19894465953D60355F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C45E70646B37312C328565953D6F8BCC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C45E70646B37312C328565953D6F8BCC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3D9792C8C44585EE9C9265953D7C6A93" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_3D9792C8C44585EE9C9265953D7C6A93" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAdditions_B263FF165FF22B65935965CAC4FBEDBD" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4418C4D754FB82B1CDAC657FA4A961F0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAdditions_B263FF165FF22B65935965CAC4FBEDBD" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/PropertyAndEquipmentTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5400C3572331996D294504B417B30584" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5E7CD276367ECD99FCB304B417B2A0A2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5400C3572331996D294504B417B30584" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5E7CD276367ECD99FCB304B417B2A0A2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_E2A4E7692C808B24AC6404B417B2B321" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5E7CD276367ECD99FCB304B417B2A0A2" xlink:to="loc_us-gaap_AwardTypeAxis_E2A4E7692C808B24AC6404B417B2B321" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_E2A4E7692C808B24AC6404B417B2B321" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_E2A4E7692C808B24AC6404B417B2B321" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockCompensationPlanMember" xlink:label="loc_us-gaap_StockCompensationPlanMember_4CE9E2B687A5A43A4D4104B417B28CA1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04" xlink:to="loc_us-gaap_StockCompensationPlanMember_4CE9E2B687A5A43A4D4104B417B28CA1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeStockMember" xlink:label="loc_us-gaap_EmployeeStockMember_002475DEE058FFD301FC04B417B35FB5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C78454299C9846DA036204B417B2BF04" xlink:to="loc_us-gaap_EmployeeStockMember_002475DEE058FFD301FC04B417B35FB5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_E5BA9CFB4F3DD620A94F04B417B3C277" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5400C3572331996D294504B417B30584" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_E5BA9CFB4F3DD620A94F04B417B3C277" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensationFutureStockBasedCompensationExpenseDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensationRestrictedSharesAndStockUnitsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_13E7EF799E15A1D5904899D963F671C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_13E7EF799E15A1D5904899D963F671C1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_90CF26135CD69E86355099D963F69132" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_13E7EF799E15A1D5904899D963F671C1" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_90CF26135CD69E86355099D963F69132" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2E3C4D7E634756147AEB99D963F6008C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_90CF26135CD69E86355099D963F69132" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2E3C4D7E634756147AEB99D963F6008C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2E3C4D7E634756147AEB99D963F6008C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_90CF26135CD69E86355099D963F69132" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2E3C4D7E634756147AEB99D963F6008C" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_CompensationandRelatedCostsMember" xlink:label="loc_trow_CompensationandRelatedCostsMember_7725F9960A86C00B94A399D963F6D854" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2E3C4D7E634756147AEB99D963F6008C" xlink:to="loc_trow_CompensationandRelatedCostsMember_7725F9960A86C00B94A399D963F6D854" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_327F836BA8F041E1D8A099D963F637F3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_13E7EF799E15A1D5904899D963F671C1" xlink:to="loc_us-gaap_AwardTypeAxis_327F836BA8F041E1D8A099D963F637F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CB5F838F4F12DBF0D74E99D963F697C2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_327F836BA8F041E1D8A099D963F637F3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CB5F838F4F12DBF0D74E99D963F697C2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CB5F838F4F12DBF0D74E99D963F697C2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_327F836BA8F041E1D8A099D963F637F3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CB5F838F4F12DBF0D74E99D963F697C2" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RestrictedStockAndRestrictedStockUnitsMember" xlink:label="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_15D36A427ABF1AE8617699D963F77750" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CB5F838F4F12DBF0D74E99D963F697C2" xlink:to="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_15D36A427ABF1AE8617699D963F77750" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_3D824239AB71E258130099D963F768E5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_15D36A427ABF1AE8617699D963F77750" xlink:to="loc_us-gaap_RestrictedStockMember_3D824239AB71E258130099D963F768E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_A5D801B63E677570ABE499D963F7D7D5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_15D36A427ABF1AE8617699D963F77750" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_A5D801B63E677570ABE499D963F7D7D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_6A5956C49E5C87B5F69F99D963F7C6BA" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_13E7EF799E15A1D5904899D963F671C1" xlink:to="loc_us-gaap_VestingAxis_6A5956C49E5C87B5F69F99D963F7C6BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_6A5956C49E5C87B5F69F99D963F7C6BA" xlink:to="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_6A5956C49E5C87B5F69F99D963F7C6BA" xlink:to="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_095714E5F027A3A1444F99D963F72241" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_095714E5F027A3A1444F99D963F72241" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_15907C5CB8389BF1714C99D963F725AD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_86B13AE326064BE29D1D99D963F7E9D8" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_15907C5CB8389BF1714C99D963F725AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_F980E962621DE82AE22999D963FC951E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_F980E962621DE82AE22999D963FC951E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_753CAB66E2C6E3F3E69D99D963FD0F28" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_753CAB66E2C6E3F3E69D99D963FD0F28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_5B89FF0247F8A6C2575499D963FD1765" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_5B89FF0247F8A6C2575499D963FD1765" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_00EB8C9083AB51F4CFAB99D963FD7683" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_3D6B905D5FB6B367E6E299D963FC5824" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_00EB8C9083AB51F4CFAB99D963FD7683" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_E969BC40C52E1E78B75499D963FDB3F6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_E969BC40C52E1E78B75499D963FDB3F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_7635C7B8FED19D92876399D963FD53B5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_7635C7B8FED19D92876399D963FD53B5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_4457C9E5A2B7C3965C3699D963FDFDCE" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_4457C9E5A2B7C3965C3699D963FDFDCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_438E7D2A5025380033E499D963FE735E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_232203E8B0A43B804B2E99D963FD8AB2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_438E7D2A5025380033E499D963FE735E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_C1375CA182146332E9CA99D963FEF904" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_C1375CA182146332E9CA99D963FEF904" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedPerformanceThresholdMetNumber" xlink:label="loc_trow_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedPerformanceThresholdMetNumber_04C62AE6053FABF7312A99D963FEAD68" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_trow_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedPerformanceThresholdMetNumber_04C62AE6053FABF7312A99D963FEAD68" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_74B8F4A83C476FEB42A799D963FEA5B8" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_74B8F4A83C476FEB42A799D963FEA5B8" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VestedRestrictedStockUnits" xlink:label="loc_trow_VestedRestrictedStockUnits_5294A404B4C90A5F26BA99D963FEB0B7" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E8DEF8462B2D56D4668C99D963F760DB" xlink:to="loc_trow_VestedRestrictedStockUnits_5294A404B4C90A5F26BA99D963FEB0B7" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensationStockOptionsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_57E032A9A133C62A57E56ACD4709CFCC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_57E032A9A133C62A57E56ACD4709CFCC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_CAF3C56CC269D0A5ABA16ACD48CBAAF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_57E032A9A133C62A57E56ACD4709CFCC" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_CAF3C56CC269D0A5ABA16ACD48CBAAF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_7B1FABAB2BC682A4BAF36ACD9EFAB9F7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_CAF3C56CC269D0A5ABA16ACD48CBAAF5" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_7B1FABAB2BC682A4BAF36ACD9EFAB9F7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_7B1FABAB2BC682A4BAF36ACD9EFAB9F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_CAF3C56CC269D0A5ABA16ACD48CBAAF5" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_7B1FABAB2BC682A4BAF36ACD9EFAB9F7" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_CompensationandRelatedCostsMember" xlink:label="loc_trow_CompensationandRelatedCostsMember_CB018500DE56C4635CA86ACD4A65B51C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_7B1FABAB2BC682A4BAF36ACD9EFAB9F7" xlink:to="loc_trow_CompensationandRelatedCostsMember_CB018500DE56C4635CA86ACD4A65B51C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_C3DA7E88409296CD4BBA6ACD470A6274" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_57E032A9A133C62A57E56ACD4709CFCC" xlink:to="loc_us-gaap_AwardTypeAxis_C3DA7E88409296CD4BBA6ACD470A6274" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E9410050D1854531B2156ACD470BC010_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_C3DA7E88409296CD4BBA6ACD470A6274" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E9410050D1854531B2156ACD470BC010_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E9410050D1854531B2156ACD470BC010" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_C3DA7E88409296CD4BBA6ACD470A6274" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E9410050D1854531B2156ACD470BC010" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_8EEB4705E0F5EB1B0E7F6ACD4AF772B6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E9410050D1854531B2156ACD470BC010" xlink:to="loc_us-gaap_EmployeeStockOptionMember_8EEB4705E0F5EB1B0E7F6ACD4AF772B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4B6F533BFC702CF2477A6A5E7FC54892" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4B6F533BFC702CF2477A6A5E7FC54892" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_AD60175E370BBCE889516A5E7FC50E6C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_AD60175E370BBCE889516A5E7FC50E6C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_C836A59F85638497DEE26A5E7FC5CC1B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_C836A59F85638497DEE26A5E7FC5CC1B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_F3999663E421E805EB0F6A5E7FC5D88F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_F3999663E421E805EB0F6A5E7FC5D88F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_F4B00412609B399265DC6A5E7FC512AD" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_F4B00412609B399265DC6A5E7FC512AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_C3A2ACA53AE56FB5FF966A5E7FC5730C" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3FADD954A798ECBAB7446A5E7FC5F395" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_C3A2ACA53AE56FB5FF966A5E7FC5730C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_CCEC8966059A93101B5C6A5E7FC558BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_CCEC8966059A93101B5C6A5E7FC558BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_A8139DFD8D070F8782A26A5E7FC597CA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_A8139DFD8D070F8782A26A5E7FC597CA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_A027F9E82DCC768D9E236A5E7FC5620F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_A027F9E82DCC768D9E236A5E7FC5620F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_687AD3C316B56A94B6486A5E7FC52262" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_687AD3C316B56A94B6486A5E7FC52262" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_DB609179E1C82F0B9BBB6A5E7FC67FFE" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_DB609179E1C82F0B9BBB6A5E7FC67FFE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9E45EEBA73E87C73E53E6A5E7FC61C36" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_4BFB7DC1460ABD16EE986A5E7FC56D2B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9E45EEBA73E87C73E53E6A5E7FC61C36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_02DC7337FFE76BAE27286AD0199BC52D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_02DC7337FFE76BAE27286AD0199BC52D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_C53EDD14C784665A414C6AD01B26F627" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_C53EDD14C784665A414C6AD01B26F627" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_6CE83F16D1DC97D621436ACD4760C30D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_6CE83F16D1DC97D621436ACD4760C30D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_D8AFFEC981A16DB831F36AD46BABAC97" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_D8AFFEC981A16DB831F36AD46BABAC97" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_8C882E73C53AE74BF25E6AD46C1D2A89" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_8C882E73C53AE74BF25E6AD46C1D2A89" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_9C3EBCF93750E8D2795B6AD46C53E389" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8429F987D0BE3261C5C06ACD470DCE77" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_9C3EBCF93750E8D2795B6AD46C53E389" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockBasedCompensationTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockholdersEquity" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/StockholdersEquityDetails" xlink:type="extended">
    <link:loc xlink:href="trow-20161231.xsd#trow_StockholdersEquityNoteLineItems" xlink:label="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:type="locator" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockholdersEquityNoteTable" xlink:label="loc_trow_StockholdersEquityNoteTable_2415D97AEE99838150AD6A5E7FD2C44D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:to="loc_trow_StockholdersEquityNoteTable_2415D97AEE99838150AD6A5E7FD2C44D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsAxis" xlink:label="loc_us-gaap_DividendsAxis_9E11B5220B845AB7F13C6A5E7FD23F46" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trow_StockholdersEquityNoteTable_2415D97AEE99838150AD6A5E7FD2C44D" xlink:to="loc_us-gaap_DividendsAxis_9E11B5220B845AB7F13C6A5E7FD23F46" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsDomain" xlink:label="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DividendsAxis_9E11B5220B845AB7F13C6A5E7FD23F46" xlink:to="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DividendsDomain" xlink:label="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DividendsAxis_9E11B5220B845AB7F13C6A5E7FD23F46" xlink:to="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_OrdinaryDividendMember" xlink:label="loc_trow_OrdinaryDividendMember_D778B088BFCDE8F4157C6A5E7FD38DD1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394" xlink:to="loc_trow_OrdinaryDividendMember_D778B088BFCDE8F4157C6A5E7FD38DD1" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_SpecialDividendMember" xlink:label="loc_trow_SpecialDividendMember_5DEE359E1882C9432B476A5E7FD3D736" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DividendsDomain_B94D742724E58E438B326A5E7FD3A394" xlink:to="loc_trow_SpecialDividendMember_5DEE359E1882C9432B476A5E7FD3D736" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_E8CDCFC3966BACD5261F6AA340E1765B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_E8CDCFC3966BACD5261F6AA340E1765B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_06AB3A2504C9053581AF6A5E7FD3EDA4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_06AB3A2504C9053581AF6A5E7FD3EDA4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_845345C6943E6844C5CC6A5E7FD3C420" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_845345C6943E6844C5CC6A5E7FD3C420" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries" xlink:label="loc_us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_541E10C925DEA85BE2B26AA49837D6D4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_StockholdersEquityNoteLineItems_2763EF4D402E316F861B6A5E7FD3D637" xlink:to="loc_us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_541E10C925DEA85BE2B26AA49837D6D4" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesGoodwillDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesInvestmentsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesNewAccountingGuidanceDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionAxis" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_7299880B764E3B68D083FB103B945CFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_7299880B764E3B68D083FB103B945CFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_071E6ED450AEBAC4C7DFFB103B9489CD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_7299880B764E3B68D083FB103B945CFF" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_071E6ED450AEBAC4C7DFFB103B9489CD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPrinciplesEarlyAdoptionMember" xlink:label="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_071E6ED450AEBAC4C7DFFB103B9489CD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionAxis_7299880B764E3B68D083FB103B945CFF" xlink:to="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_071E6ED450AEBAC4C7DFFB103B9489CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember" xlink:label="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_069E0A84A7E98675FBC6FB103B94E685" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPrinciplesEarlyAdoptionMember_071E6ED450AEBAC4C7DFFB103B9489CD" xlink:to="loc_us-gaap_NewAccountingPronouncementEarlyAdoptionEffectMember_069E0A84A7E98675FBC6FB103B94E685" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_75053CD3C76CD54793A0FB103B94266F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_75053CD3C76CD54793A0FB103B94266F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_75053CD3C76CD54793A0FB103B94266F" xlink:to="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_75053CD3C76CD54793A0FB103B94266F" xlink:to="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_E979B9E2A104D8D7D217FB103B94A402" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_E979B9E2A104D8D7D217FB103B94A402" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RetainedEarningsUnappropriatedMember" xlink:label="loc_us-gaap_RetainedEarningsUnappropriatedMember_C4815EC05CE75C42CC76FB103B97F743" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438" xlink:to="loc_us-gaap_RetainedEarningsUnappropriatedMember_C4815EC05CE75C42CC76FB103B97F743" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_E44DDED36F74E32C848DFB103B978194" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_66839E9E1FA8F32B463FFB103B94C438" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_E44DDED36F74E32C848DFB103B978194" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_C7FB347CDD1E56B5EDC3FB103B973F24" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_C7FB347CDD1E56B5EDC3FB103B973F24" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C7FB347CDD1E56B5EDC3FB103B973F24" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C7FB347CDD1E56B5EDC3FB103B973F24" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsMember" xlink:label="loc_us-gaap_AssetsMember_489E949D6B6BCCCAEF0AFB103B97F536" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:to="loc_us-gaap_AssetsMember_489E949D6B6BCCCAEF0AFB103B97F536" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LiabilityMember" xlink:label="loc_us-gaap_LiabilityMember_2614C66E6861AF33C8F2FB103B97247C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:to="loc_us-gaap_LiabilityMember_2614C66E6861AF33C8F2FB103B97247C" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RedeemableNoncontrollingInterestMember" xlink:label="loc_trow_RedeemableNoncontrollingInterestMember_2F0F10D3DA288A081CBAFB103B9751A4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:to="loc_trow_RedeemableNoncontrollingInterestMember_2F0F10D3DA288A081CBAFB103B9751A4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_2C62A606F423092A14B4FB103B970DE0" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_87C4D473EAC13E6688EAFB103B974D6B" xlink:to="loc_us-gaap_OtherAssetsMember_2C62A606F423092A14B4FB103B970DE0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_82F0EB7F068F8A2AF851FB103B97ED66" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_82F0EB7F068F8A2AF851FB103B97ED66" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_82F0EB7F068F8A2AF851FB103B97ED66" xlink:to="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_82F0EB7F068F8A2AF851FB103B97ED66" xlink:to="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountingStandardsUpdate201502Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201502Member_74BCF06C96BAA8D9BD87FB103B97E423" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53" xlink:to="loc_us-gaap_AccountingStandardsUpdate201502Member_74BCF06C96BAA8D9BD87FB103B97E423" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccountingStandardsUpdate201609ExcessTaxBenefitComponentMember" xlink:label="loc_trow_AccountingStandardsUpdate201609ExcessTaxBenefitComponentMember_5C1A9B1406268CC47B56FB103B97A2DA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53" xlink:to="loc_trow_AccountingStandardsUpdate201609ExcessTaxBenefitComponentMember_5C1A9B1406268CC47B56FB103B97A2DA" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember" xlink:label="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_ED0A567D61F0E8D747C5FB103B973D08" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_4C8E309B4050D678D854FB103B97DC53" xlink:to="loc_trow_AccountingStandardsUpdate201609ForfeitureRateComponentMember_ED0A567D61F0E8D747C5FB103B973D08" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_C8E2D075C1798306302CFB103B971F17" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7F34CD03F7898CE1437CFB103B94DEA5" xlink:to="loc_trow_ConsolidatedEntitiesAxis_C8E2D075C1798306302CFB103B971F17" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_C8E2D075C1798306302CFB103B971F17" xlink:to="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_C8E2D075C1798306302CFB103B971F17" xlink:to="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_B47D91440337EAE05518FB103B97D152" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_B47D91440337EAE05518FB103B97D152" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_VotingInterestEntitiesMember" xlink:label="loc_trow_VotingInterestEntitiesMember_82CCE3699BEFA6157488FB103B975801" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_25C17B64113D88CCB604FB103B976374" xlink:to="loc_trow_VotingInterestEntitiesMember_82CCE3699BEFA6157488FB103B975801" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_NumberOfSponsoredInvestmentPortfoliosInitiallyConsolidated" xlink:label="loc_trow_NumberOfSponsoredInvestmentPortfoliosInitiallyConsolidated_DCBAE3450B0696DA2D6FFB103B97B3EF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_trow_NumberOfSponsoredInvestmentPortfoliosInitiallyConsolidated_DCBAE3450B0696DA2D6FFB103B97B3EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_C6FD3F2374FA8ADA068AFB103B978AB4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_C6FD3F2374FA8ADA068AFB103B978AB4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_98B1FDC2515D34F09A39FB103B9753BF" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_us-gaap_EarningsPerShareDiluted_98B1FDC2515D34F09A39FB103B9753BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_40C79161C98CED6B7817FB103B976FAE" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_40C79161C98CED6B7817FB103B976FAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_243252C038E9B50B65B9FB103B976611" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_243252C038E9B50B65B9FB103B976611" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitTaxShortfallAmount" xlink:label="loc_trow_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitTaxShortfallAmount_E4B3A9D75293F52810C3FB103B977B08" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BF8E87EB0558CC6BAAB2FB103B9753E8" xlink:to="loc_trow_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitTaxShortfallAmount_E4B3A9D75293F52810C3FB103B977B08" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_B6F779BE34E051015D114B4D59F6F608" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_FC02E1C3C6298D7F7DC14B4D59F580F6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_B6F779BE34E051015D114B4D59F6F608" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_FC02E1C3C6298D7F7DC14B4D59F580F6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_70F4FB574A3A79BF487B4B4D59F5BC7D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_FC02E1C3C6298D7F7DC14B4D59F580F6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_70F4FB574A3A79BF487B4B4D59F5BC7D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_70F4FB574A3A79BF487B4B4D59F5BC7D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_70F4FB574A3A79BF487B4B4D59F5BC7D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ComputerAndCommunicationsSoftwareAndEquipmentMember" xlink:label="loc_trow_ComputerAndCommunicationsSoftwareAndEquipmentMember_10BF7771D4A1B55C19064B4D59F681BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:to="loc_trow_ComputerAndCommunicationsSoftwareAndEquipmentMember_10BF7771D4A1B55C19064B4D59F681BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_8681626493F41DC2CAEF4B4D59F658A9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_8681626493F41DC2CAEF4B4D59F658A9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_DD4193EFF805532B34984B4D59F60CD8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_DD4193EFF805532B34984B4D59F60CD8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_C81C83ACD51CCDC13BB44B4D59F6F133" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_C81C83ACD51CCDC13BB44B4D59F6F133" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_LeasedLandMember" xlink:label="loc_trow_LeasedLandMember_5D2BC0EF377F24F462764B4D59F69871" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_246AE69EECAF71AC37794B4D59F5BB04" xlink:to="loc_trow_LeasedLandMember_5D2BC0EF377F24F462764B4D59F69871" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_0FFC11AA6CEA1CE3770B4B4D59F68B7F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_B6F779BE34E051015D114B4D59F6F608" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_0FFC11AA6CEA1CE3770B4B4D59F68B7F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesStockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_94BAF91C9719AA9325DC9928D3834A47" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_94BAF91C9719AA9325DC9928D3834A47" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_407D4F9CF11933A9EC6D9928D3846D89" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_94BAF91C9719AA9325DC9928D3834A47" xlink:to="loc_us-gaap_RangeAxis_407D4F9CF11933A9EC6D9928D3846D89" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_407D4F9CF11933A9EC6D9928D3846D89" xlink:to="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_407D4F9CF11933A9EC6D9928D3846D89" xlink:to="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_D10BD1B1633300637CE29928D3844AD7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB" xlink:to="loc_us-gaap_MinimumMember_D10BD1B1633300637CE29928D3844AD7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_B12FD444C89A61F3D0C79928D384E475" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_78A21902FE06418EF2179928D3844DBB" xlink:to="loc_us-gaap_MaximumMember_B12FD444C89A61F3D0C79928D384E475" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_C4946766BC62C6B6B97F9928D3844662" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_94BAF91C9719AA9325DC9928D3834A47" xlink:to="loc_us-gaap_PlanNameAxis_C4946766BC62C6B6B97F9928D3844662" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_C4946766BC62C6B6B97F9928D3844662" xlink:to="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_C4946766BC62C6B6B97F9928D3844662" xlink:to="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_EmployeeStockBasedCompensationProgramsMember" xlink:label="loc_trow_EmployeeStockBasedCompensationProgramsMember_27B760C4DCBFBE517C659928D3843A1E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127" xlink:to="loc_trow_EmployeeStockBasedCompensationProgramsMember_27B760C4DCBFBE517C659928D3843A1E" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_NonEmployeeDirectorMember" xlink:label="loc_trow_NonEmployeeDirectorMember_07DFBFC13766C830F5269928D385E659" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4A4C56418CEC62C954289928D384F127" xlink:to="loc_trow_NonEmployeeDirectorMember_07DFBFC13766C830F5269928D385E659" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_96FA4BF1EC73638D3FDF9928D385D948" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_94BAF91C9719AA9325DC9928D3834A47" xlink:to="loc_us-gaap_AwardTypeAxis_96FA4BF1EC73638D3FDF9928D385D948" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_96FA4BF1EC73638D3FDF9928D385D948" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_96FA4BF1EC73638D3FDF9928D385D948" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockCompensationPlanMember" xlink:label="loc_us-gaap_StockCompensationPlanMember_0DB7518604EB2CF5B4809928D385EE3E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7" xlink:to="loc_us-gaap_StockCompensationPlanMember_0DB7518604EB2CF5B4809928D385EE3E" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_RestrictedStockAndRestrictedStockUnitsMember" xlink:label="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_1A8853E662AF7367690D9928D38555C3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7" xlink:to="loc_trow_RestrictedStockAndRestrictedStockUnitsMember_1A8853E662AF7367690D9928D38555C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_B26B8A5D7FABA2A4ECB79928D385AE9B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0B509806F1833EC63E4B9928D38591D7" xlink:to="loc_us-gaap_EmployeeStockOptionMember_B26B8A5D7FABA2A4ECB79928D385AE9B" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_StockholderApprovedPlansForStockOptions" xlink:label="loc_trow_StockholderApprovedPlansForStockOptions_AF86AF96623BAC2FF3FF9928D385109E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_trow_StockholderApprovedPlansForStockOptions_AF86AF96623BAC2FF3FF9928D385109E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_7B47191F8EC6CE57A3FF9928D3856F6B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_7B47191F8EC6CE57A3FF9928D3856F6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_47EA3CE03ED566685CC39928D385945F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_47EA3CE03ED566685CC39928D385945F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_8BA7EA3407A747B8C6DA9928D385FD69" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_8BA7EA3407A747B8C6DA9928D385FD69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_42BCB45311A69C83335C9928D385770F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0DF6C059B5FEE7BA26839928D385A104" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0DF6C059B5FEE7BA26839928D385A104" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9E7BD1634172431A1A0D9928D3867636" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9E7BD1634172431A1A0D9928D3867636" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_CBA6FA01F1B93AE88D649928D38647AE" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_CBA6FA01F1B93AE88D649928D38647AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BAB957FCDCE804ECE7EF9928D386A741" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BAB957FCDCE804ECE7EF9928D386A741" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_B81A7338B8A0DF3F98639928D386EA30" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_0B7892E5E0A9F654DE609928D385E3DB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_B81A7338B8A0DF3F98639928D386EA30" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowSchedule" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowScheduleDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_4D427FB7A59AE466A8CEE1C96BA0A579" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_4D427FB7A59AE466A8CEE1C96BA0A579" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesAxis" xlink:label="loc_trow_ConsolidatedEntitiesAxis_CA7E50B7C7E0548E0816E1C96BA0503F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_4D427FB7A59AE466A8CEE1C96BA0A579" xlink:to="loc_trow_ConsolidatedEntitiesAxis_CA7E50B7C7E0548E0816E1C96BA0503F" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_trow_ConsolidatedEntitiesAxis_CA7E50B7C7E0548E0816E1C96BA0503F" xlink:to="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E_default" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesDomain" xlink:label="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_trow_ConsolidatedEntitiesAxis_CA7E50B7C7E0548E0816E1C96BA0503F" xlink:to="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedEntitiesExcludingSponsoredInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedEntitiesExcludingSponsoredInvestmentPortfoliosMember_960AF29F05FE8FD145B7E1C96BA0EBEE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E" xlink:to="loc_trow_ConsolidatedEntitiesExcludingSponsoredInvestmentPortfoliosMember_960AF29F05FE8FD145B7E1C96BA0EBEE" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_ConsolidatedInvestmentPortfoliosMember" xlink:label="loc_trow_ConsolidatedInvestmentPortfoliosMember_827B496D958DCFCABBEFE1C96BA086FD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trow_ConsolidatedEntitiesDomain_5A263FCB070239C914BFE1C96BA04D4E" xlink:to="loc_trow_ConsolidatedInvestmentPortfoliosMember_827B496D958DCFCABBEFE1C96BA086FD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_2F577073C59A59978E4CE1C96BA0D489" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_4D427FB7A59AE466A8CEE1C96BA0A579" xlink:to="loc_us-gaap_ConsolidationItemsAxis_2F577073C59A59978E4CE1C96BA0D489" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_2F577073C59A59978E4CE1C96BA0D489" xlink:to="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_2F577073C59A59978E4CE1C96BA0D489" xlink:to="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReportableLegalEntitiesMember" xlink:label="loc_us-gaap_ReportableLegalEntitiesMember_A67E2FE4826C729DABC8E1C96BA0FCF4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8" xlink:to="loc_us-gaap_ReportableLegalEntitiesMember_A67E2FE4826C729DABC8E1C96BA0FCF4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_063E98425EC9D4155BA8E1C96BB0D8CF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_0B8E0A50F1DB3FC9EEADE1C96BA086D8" xlink:to="loc_us-gaap_ConsolidationEliminationsMember_063E98425EC9D4155BA8E1C96BB0D8CF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_BF4BF9CB68D4FB2CDFA3E1C96BB0C11C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_ProfitLoss_BF4BF9CB68D4FB2CDFA3E1C96BB0C11C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DepreciationNonproduction" xlink:label="loc_us-gaap_DepreciationNonproduction_60FDE93D8D686B06E9E1E1C96BB00360" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_us-gaap_DepreciationNonproduction_60FDE93D8D686B06E9E1E1C96BB00360" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_0B63153C9416C4C77AC6E1C96BB0410E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_us-gaap_ShareBasedCompensation_0B63153C9416C4C77AC6E1C96BB0410E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_EE676C47B6831864371CE1C96BB054B3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains_EE676C47B6831864371CE1C96BB054B3" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_NetGainsLossesRecognizedonInvestments" xlink:label="loc_trow_NetGainsLossesRecognizedonInvestments_705CC9BF44B4D64D4B2DE1C96BB02739" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_trow_NetGainsLossesRecognizedonInvestments_705CC9BF44B4D64D4B2DE1C96BB02739" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInTradingSecurities" xlink:label="loc_us-gaap_IncreaseDecreaseInTradingSecurities_12930C7EFD5CB42AB2BBE1C96BB08EA5" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_us-gaap_IncreaseDecreaseInTradingSecurities_12930C7EFD5CB42AB2BBE1C96BB08EA5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapital" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapital_014EEE1275594ABC865AE1CA04957BD5" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_91AC3C31E4DEA9871BAEE1C96BB08C07" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapital_014EEE1275594ABC865AE1CA04957BD5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_79972A8DEA57E9F4D5F2E1C96BB073D8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_79972A8DEA57E9F4D5F2E1C96BB073D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_390AF9ECD1F4F51CDCA3E1C96BB0EB6D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_390AF9ECD1F4F51CDCA3E1C96BB0EB6D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_CAC1C4A477F7EC5F405DE1C96BB03F6F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_CAC1C4A477F7EC5F405DE1C96BB03F6F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_D72F3E959F7943F5EB74E1C96BB0D5FB" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_D72F3E959F7943F5EB74E1C96BB0D5FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_90D94238EC30A3BC34DFE1C96BB06404" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_90D94238EC30A3BC34DFE1C96BB06404" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_CashandCashEquivalentsatCarryingValueIncludingConsolidatedSponsoredInvestmentPortfolios" xlink:label="loc_trow_CashandCashEquivalentsatCarryingValueIncludingConsolidatedSponsoredInvestmentPortfolios_59CB6500BEE83E09437CE1C96BB01DDA" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7C9E06903CF9CFE13F11E1C96BB0496E" xlink:to="loc_trow_CashandCashEquivalentsatCarryingValueIncludingConsolidatedSponsoredInvestmentPortfolios_59CB6500BEE83E09437CE1C96BB01DDA" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryConsolidatingCashFlowScheduleTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnaudited" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnauditedDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemLineItems" xlink:label="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemTable" xlink:label="loc_us-gaap_UnusualOrInfrequentItemTable_5A0058DE6F1C8741F998DC6B0A007FCB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_UnusualOrInfrequentItemTable_5A0058DE6F1C8741F998DC6B0A007FCB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_C0A2611FBD34DFE06375DC6B0A982A66" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_5A0058DE6F1C8741F998DC6B0A007FCB" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_C0A2611FBD34DFE06375DC6B0A982A66" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_F1EEC78612CC24BD1476DC6B0A9C0580_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_C0A2611FBD34DFE06375DC6B0A982A66" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_F1EEC78612CC24BD1476DC6B0A9C0580_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_F1EEC78612CC24BD1476DC6B0A9C0580" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_C0A2611FBD34DFE06375DC6B0A982A66" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_F1EEC78612CC24BD1476DC6B0A9C0580" xlink:type="arc" />
    <link:loc xlink:href="trow-20161231.xsd#trow_DellappraisalrightsmatterMember" xlink:label="loc_trow_DellappraisalrightsmatterMember_AFC10BDB590503A069C6DC6B0AC4DB06" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_F1EEC78612CC24BD1476DC6B0A9C0580" xlink:to="loc_trow_DellappraisalrightsmatterMember_AFC10BDB590503A069C6DC6B0AC4DB06" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees" xlink:label="loc_us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees_277C79120ACFF40BC934DBD6E1F7128A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_InvestmentAdvisoryManagementAndAdministrativeFees_277C79120ACFF40BC934DBD6E1F7128A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_EF9AEA96A169B2679A75DBD6E1F761A5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_ProfitLoss_EF9AEA96A169B2679A75DBD6E1F761A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_625391C7383501C6B581DBD6E1F7E4B1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_NetIncomeLoss_625391C7383501C6B581DBD6E1F7E4B1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_6E2FA34B906451E98064DBD6E1F78C6A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_EarningsPerShareBasic_6E2FA34B906451E98064DBD6E1F78C6A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_8F999ABC5AD92A92AA20DBD6E1F79BDF" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_EarningsPerShareDiluted_8F999ABC5AD92A92AA20DBD6E1F79BDF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemLossGross" xlink:label="loc_us-gaap_UnusualOrInfrequentItemLossGross_0A657869B9325C3BB77BDC6B0A8472A8" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_UnusualOrInfrequentItemLossGross_0A657869B9325C3BB77BDC6B0A8472A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnusualOrInfrequentItemInsuranceProceeds" xlink:label="loc_us-gaap_UnusualOrInfrequentItemInsuranceProceeds_0246291A6E5064676EE2DC6E1C63CBA5" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_B712FB62E831FEF71034DC6B0A008495" xlink:to="loc_us-gaap_UnusualOrInfrequentItemInsuranceProceeds_0246291A6E5064676EE2DC6E1C63CBA5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.troweprice.com/role/SupplementaryQuarterlyFinancialDataUnauditedTables" xlink:type="extended" />
</link:linkbase>
