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  <xsd:element abstract="true" id="bokf_InstitutionaltrustretirementplanservicesrevenueMember" name="InstitutionaltrustretirementplanservicesrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InsurancebrokeragerevenueMember" name="InsurancebrokeragerevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InterestRateSpreadMember" name="InterestRateSpreadMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_InterestRevenueOnFairValueOptionSecurities" name="InterestRevenueOnFairValueOptionSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Interestbearingcashandcashequivalents" name="Interestbearingcashandcashequivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_InterestincomeInterestbearingcashandcashequivalents" name="InterestincomeInterestbearingcashandcashequivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InternalRiskManagementProgramsMember" name="InternalRiskManagementProgramsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_InternallyRiskGradedAllowance" name="InternallyRiskGradedAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_InternallyRiskGradedRecordedInvestment" name="InternallyRiskGradedRecordedInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_InvestmentbankingrevenueMember" name="InvestmentbankingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InvestmentmanagementservicesandotherMember" name="InvestmentmanagementservicesandotherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LiquidityDiscountonMortgageLoansQualifyingforSaletoUSGovtAgencies" name="LiquidityDiscountonMortgageLoansQualifyingforSaletoUSGovtAgencies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_LoansAndAllowanceForCreditLossesAbstract" name="LoansAndAllowanceForCreditLossesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff" name="LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus" name="LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus" name="LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_LoanstoindividualsMember" name="LoanstoindividualsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ManagementknowledgeofIndustryMember" name="ManagementknowledgeofIndustryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ManufacturingMember" name="ManufacturingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MarketabilityadjustmentsoffappraisedvalueDomain" name="MarketabilityadjustmentsoffappraisedvalueDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" name="MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaximumNumberofDaysOutstandingForResidentialMortgageCommitments" name="MaximumNumberofDaysOutstandingForResidentialMortgageCommitments" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaximumNumberofDaysforDeliveryofForwardSalesContracts" name="MaximumNumberofDaysforDeliveryofForwardSalesContracts" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MerchantservicesrevenueMember" name="MerchantservicesrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" name="MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumNumberofDaysOutstandingForResidentialMortgageCommitments" name="MinimumNumberofDaysOutstandingForResidentialMortgageCommitments" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumNumberofDaysforDeliveryofForwardSalesContracts" name="MinimumNumberofDaysforDeliveryofForwardSalesContracts" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MisuseofRevenuesPledgedtoMunicipalBondsMember" name="MisuseofRevenuesPledgedtoMunicipalBondsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingActivitiesTextBlock" name="MortgageBankingActivitiesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingCosts" name="MortgageBankingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingRevenue" name="MortgageBankingRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageBankingRevenueAbstract" name="MortgageBankingRevenueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingRevenueTableTextBlock" name="MortgageBankingRevenueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageProductionRevenue" name="MortgageProductionRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageServicingFees" name="MortgageServicingFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgagebankingrevenueMember" name="MortgagebankingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageproductionrevenueMember" name="MortgageproductionrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageservicingrevenueMember" name="MortgageservicingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NIRexpensefrominternalsources" name="NIRexpensefrominternalsources" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts" name="NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NetChangeInDerivativeMarginAccounts" name="NetChangeInDerivativeMarginAccounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netchangeinunrealizedgainonmortgageloansheldforsale" name="Netchangeinunrealizedgainonmortgageloansheldforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netdirectcontribution" name="Netdirectcontribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netgainonmortgageloansheldforsale" name="Netgainonmortgageloansheldforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NirExpenseFromExternalSources" name="NirExpenseFromExternalSources" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NonGradedAllowance" name="NonGradedAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_NonGradedRecordedInvestment" name="NonGradedRecordedInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_NonaccruingsubstandardanddoubtfulMember" name="NonaccruingsubstandardanddoubtfulMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale" name="NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NumberofindividualswhopurchasedfacilitiesfromtheprincipalssubjecttoSECNewJerseyproceedings" name="NumberofindividualswhopurchasedfacilitiesfromtheprincipalssubjecttoSECNewJerseyproceedings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NumberofprincipalsinSECNewJerseyproceedings" name="NumberofprincipalsinSECNewJerseyproceedings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_NumeratorAbstract" name="NumeratorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OfficeMember" name="OfficeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherCommercialAndIndustrialMember" name="OtherCommercialAndIndustrialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherCommercialRealEstateMember" name="OtherCommercialRealEstateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherTradingSecuritiesMember" name="OtherTradingSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Otherchangestoprovision" name="Otherchangestoprovision" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Outstandingprincipalaccruedinterestandotheramountsrequiredbybonddocuments" name="Outstandingprincipalaccruedinterestandotheramountsrequiredbybonddocuments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_Outstandingprincipalaccruedinterestandotheramountsuponsaleoffacilitiessecuringpaymentofthebonds" name="Outstandingprincipalaccruedinterestandotheramountsuponsaleoffacilitiessecuringpaymentofthebonds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_OverdraftfeerevenueMember" name="OverdraftfeerevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PermanentResidentialMortgageMember" name="PermanentResidentialMortgageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PersonaltrustrevenueMember" name="PersonaltrustrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Prejudgmentinterestamountofenteredjudgmentagainsttheprincipalindividualandhiswife" name="Prejudgmentinterestamountofenteredjudgmentagainsttheprincipalindividualandhiswife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_Primarysecondarymortgageratespread" name="Primarysecondarymortgageratespread" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_Principalamountofenteredjudgmentagainsttheprincipalindividualandhiswife" name="Principalamountofenteredjudgmentagainsttheprincipalindividualandhiswife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ProvisionDetailsAbstract" name="ProvisionDetailsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Provisionchangeduetochangesinimpairment" name="Provisionchangeduetochangesinimpairment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Provisionchangeduetoloangrowth" name="Provisionchangeduetoloangrowth" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Provisionchangesduetonetchargeoffs" name="Provisionchangesduetonetchargeoffs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PublicFinanceMember" name="PublicFinanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PurchaseoffacilitiesfromprincipalssubjecttoSECNewJerseyproceedingsMember" name="PurchaseoffacilitiesfromprincipalssubjecttoSECNewJerseyproceedingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_QuotedpricesofloanssoldinsecuritizationtransactionswithaliquiditydiscountappliedMember" name="QuotedpricesofloanssoldinsecuritizationtransactionswithaliquiditydiscountappliedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_RangeofInterestRatesusedtoValueSecurities" name="RangeofInterestRatesusedtoValueSecurities" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_Rangeoffairvalueasapercentageofpartvalue" name="Rangeoffairvalueasapercentageofpartvalue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ReclassificationAdjustmentsIncludedInEarningsAbstract" name="ReclassificationAdjustmentsIncludedInEarningsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RecordedInvestmentAbstract" name="RecordedInvestmentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RelatedAllowanceAbstract" name="RelatedAllowanceAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_RepossessedAssetsExpenseAndNetLosses" name="RepossessedAssetsExpenseAndNetLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ResidentialMortgageLoanCommitmentsMember" name="ResidentialMortgageLoanCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleNonperforming" name="ResidentialMortgageLoansHeldForSaleNonperforming" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleTableTextBlock" name="ResidentialMortgageLoansHeldForSaleTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross" name="ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ResidentialMortgageLoansHeldforSaleMember" name="ResidentialMortgageLoansHeldforSaleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedNumberOfLoans" name="ResidentialMortgageLoansServicedNumberOfLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedOutstandingPrincipal" name="ResidentialMortgageLoansServicedOutstandingPrincipal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedWeightedAverageRemainingTerm" name="ResidentialMortgageLoansServicedWeightedAverageRemainingTerm" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ResidentialconstructionandlanddevelopmentMember" name="ResidentialconstructionandlanddevelopmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RetailbrokeragerevenueMember" name="RetailbrokeragerevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfAccumulatedOtherComprehensiveIncomeRollForward" name="ScheduleOfAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfResidentialMortgageLoansHeldForSaleLineItems" name="ScheduleOfResidentialMortgageLoansHeldForSaleLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfResidentialMortgageLoansHeldForSaleTable" name="ScheduleOfResidentialMortgageLoansHeldForSaleTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SecuritiesFairValueOptionSecuritiesAbstract" name="SecuritiesFairValueOptionSecuritiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_SegmentReportingChangeinFairValueofMortgageServicingRights" name="SegmentReportingChangeinFairValueofMortgageServicingRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ServicesMember" name="ServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate" name="ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SpecificAllowanceMember" name="SpecificAllowanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SummaryOfMortgageServicingRightsAbstract" name="SummaryOfMortgageServicingRightsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_SummaryOfMortgageServicingRightsTableTextBlock" name="SummaryOfMortgageServicingRightsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TbaResidentialMortgageBackedSecuritiesMember" name="TbaResidentialMortgageBackedSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_TotalFeesAndCommissions" name="TotalFeesAndCommissions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TradingMember" name="TradingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_TradingSecuritiesNetUnrealizedGainsLosses" name="TradingSecuritiesNetUnrealizedGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_TransFundEFTnetworkrevenueMember" name="TransFundEFTnetworkrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TransactioncardrevenueMember" name="TransactioncardrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms" name="TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ValuationTechniqueAppraisedValueasAdjustedMember" name="ValuationTechniqueAppraisedValueasAdjustedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_WealthManagementMember" name="WealthManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_WeightedAverageInterestRateofLoansServicedforOthers" name="WeightedAverageInterestRateofLoansServicedforOthers" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_WholesaleAndRetailMember" name="WholesaleAndRetailMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
