<?xml version="1.0" encoding="US-ASCII"?>
<!-- EDGAR Online I-Metrix Xcelerate Taxonomy Calculation Linkbase, based on XBRL 2.1  http://www.edgar-online.com/ -->
<!-- Version: 6.12.8 -->
<!-- Round: cfa80337-780c-4e36-91ec-95d1ec34ec26 -->
<!-- Creation date: 2011-10-28T20:06:54Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DocumentDocumentandEntityInformation" roleURI="http://www.ntrs.com/taxonomy/role/DocumentDocumentandEntityInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfFinancialPositionUnclassified-DepositBasedOperations" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfFinancialPositionUnclassified-DepositBasedOperations"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfFinancialPositionUnclassified-DepositBasedOperationsParen" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfFinancialPositionUnclassified-DepositBasedOperationsParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfIncomeInterestBasedRevenue" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfIncomeInterestBasedRevenue"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfOtherComprehensiveIncome" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfOtherComprehensiveIncome"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfIncomeInterestBasedRevenueParen" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfIncomeInterestBasedRevenueParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_basi-StatementOfShareholdersEquityAndOtherComprehensiveIncome" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_StatementOfCashFlowsIndirectDepositBasedOperations" roleURI="http://www.ntrs.com/taxonomy/role/StatementOfCashFlowsIndirectDepositBasedOperations"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevel" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevel"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevelParenthetical" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevelParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureChangesInLevel3Assets" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureChangesInLevel3Assets"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureFairValueMeasurementsFairValueHierarchyAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureFairValueMeasurementsFairValueHierarchyAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureChangesInLevel3Liabilities" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureChangesInLevel3Liabilities"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasis" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasis"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasisParenthetical" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasisParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureBookAndFairValuesOfFinancialInstruments" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureBookAndFairValuesOfFinancialInstruments"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAmortizedCostAndFairValuesOfSecurities" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAmortizedCostAndFairValuesOfSecurities"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureMaturityOfSecurities" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureMaturityOfSecurities"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureSecuritiesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureSecuritiesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureSecuritiesContinuousUnrealizedLossPosition" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureSecuritiesContinuousUnrealizedLossPosition"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureBookValuesUltimateDefaultRatesAndLossSeverityRatesForTheNonAgencyResidentialMortgageBackedSecuritiesPortfolioBySecurityType" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureBookValuesUltimateDefaultRatesAndLossSeverityRatesForTheNonAgencyResidentialMortgageBackedSecuritiesPortfolioBySecurityType"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureCreditLossesOnDebtSecurities" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureCreditLossesOnDebtSecurities"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureCreditRelatedLossesRecognizedInEarningsOnDebtSecuritiesOtherthantemporarilyImpaired" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureCreditRelatedLossesRecognizedInEarningsOnDebtSecuritiesOtherthantemporarilyImpaired"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureDebtSecuritiesHeldForWhichAnOtherThanTemporaryImpairmentLossHasBeenRecognizedInTheCurrentPeriodOrPreviously" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureDebtSecuritiesHeldForWhichAnOtherThanTemporaryImpairmentLossHasBeenRecognizedInTheCurrentPeriodOrPreviously"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAmountsOutstandingInSelectedLoanCategories" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAmountsOutstandingInSelectedLoanCategories"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureLoansAndLeasesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureLoansAndLeasesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureCreditQualityIndicators" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureCreditQualityIndicators"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureBalancesAndDelinquencyStatusOfPerformingAndNonperformingLoansAndLeasesBySegmentAndClassAsWellAsTotalOtherRealEstateOwnedAndNonperformingAsset" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureBalancesAndDelinquencyStatusOfPerformingAndNonperformingLoansAndLeasesBySegmentAndClassAsWellAsTotalOtherRealEstateOwnedAndNonperformingAsset"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureImpairedLoansBySegmentsAndClass" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureImpairedLoansBySegmentsAndClass"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureAverageRecordedInvestmentInImpairedLoansAndInterestIncomeThatWouldHaveBeenRecordedOnNonperformingLoans" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureAverageRecordedInvestmentInImpairedLoansAndInterestIncomeThatWouldHaveBeenRecordedOnNonperformingLoans"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalanceOfThoseTDRs" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalanceOfThoseTDRs"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameDisclosureNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalance" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameDisclosureNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalance"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureChangesInTheAllowanceForCreditLossesBySegment" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureChangesInTheAllowanceForCreditLossesBySegment"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureReserveForCreditLossesAndRecordedInvestmentsInLoansAndLeasesBySegment" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureReserveForCreditLossesAndRecordedInvestmentsInLoansAndLeasesBySegment"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosurePledgedAssetsAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosurePledgedAssetsAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureChangesInCarryingAmountsOfGoodwillByBusinessUnit" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureChangesInCarryingAmountsOfGoodwillByBusinessUnit"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureOtherIntangibleAssetsSubjectToAmortization" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureOtherIntangibleAssetsSubjectToAmortization"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureGoodwillAndOtherIntangiblesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureEarningsContributionOfNorthernTrustsBusinessUnits" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureEarningsContributionOfNorthernTrustsBusinessUnits"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureEarningsContributionOfNorthernTrustsBusinessUnitsParenthetical" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureEarningsContributionOfNorthernTrustsBusinessUnitsParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureComponentsOfAccumulatedOtherComprehensiveIncomeLoss" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureComponentsOfAccumulatedOtherComprehensiveIncomeLoss"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureComputationsOfNetIncomeLossPerCommonShare" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureComputationsOfNetIncomeLossPerCommonShare"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNetIncomePerCommonShareComputationsAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNetIncomePerCommonShareComputationsAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureComponentsOfNetInterestIncome" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureComponentsOfNetInterestIncome"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureVisaMembershipAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureVisaMembershipAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureIncomeTaxesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNetPeriodicPensionExpenseOfNorthernTrustsUSAndNonUSPensionPlansSupplementalPensionPlanAndOtherPostretirementPlan" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNetPeriodicPensionExpenseOfNorthernTrustsUSAndNonUSPensionPlansSupplementalPensionPlanAndOtherPostretirementPlan"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureCompensationExpenseForShareBasedPaymentArrangementsAndTheAssociatedTaxImpacts" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureCompensationExpenseForShareBasedPaymentArrangementsAndTheAssociatedTaxImpacts"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureVariableInterestEntitiesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureVariableInterestEntitiesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureContingentLiabilitiesAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureContingentLiabilitiesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureDerivativeFinancialInstrumentsAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureDerivativeFinancialInstrumentsAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNotionalAndFairValueAmountsOfClientrelatedAndTradingDerivativeFinancialInstruments" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNotionalAndFairValueAmountsOfClientrelatedAndTradingDerivativeFinancialInstruments"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToClientRelatedAndTradingDerivativeFinancialInstruments" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToClientRelatedAndTradingDerivativeFinancialInstruments"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureTypesAndClassificationsOfDerivativeInstrumentsDesignatedAsHedges" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureTypesAndClassificationsOfDerivativeInstrumentsDesignatedAsHedges"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToFairValueHedges" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToFairValueHedges"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureCashFlowHedgeDerivativeGainsAndLossesRecognizedInAOCIAndTheAmountsReclassifiedToEarnings" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureCashFlowHedgeDerivativeGainsAndLossesRecognizedInAOCIAndTheAmountsReclassifiedToEarnings"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureNetInvestmentHedgeGainsAndLossesRecognizedInAOCI" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureNetInvestmentHedgeGainsAndLossesRecognizedInAOCI"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureTypesAndClassificationsOfRiskManagementDerivativeInstrumentsNotFormallyDesignatedAsHedgesIncludingNotionalAndFairValues" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureTypesAndClassificationsOfRiskManagementDerivativeInstrumentsNotFormallyDesignatedAsHedgesIncludingNotionalAndFairValues"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToDerivativeInstrumentsNotFormallyDesignatedAsHedges" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToDerivativeInstrumentsNotFormallyDesignatedAsHedges"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#DisclosureDebtIssuanceAdditionalInformation" roleURI="http://www.ntrs.com/taxonomy/role/DisclosureDebtIssuanceAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDescriptionOfNewAccountingPronouncementsNotYetAdopted" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDescriptionOfNewAccountingPronouncementsNotYetAdopted"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsFairValueDisclosuresTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsFairValueDisclosuresTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsAllowanceForCreditLossesTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsAllowanceForCreditLossesTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsAllowanceForCreditLossesTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsAllowanceForCreditLossesTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsRestrictedAssetsDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsRestrictedAssetsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsComprehensiveIncomeNoteTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsComprehensiveIncomeNoteTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsEarningsPerShareTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsEarningsPerShareTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsVisaMembershipTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsVisaMembershipTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDisclosureOfVariableInterestEntitiesTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfVariableInterestEntitiesTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsLossContingencyDisclosures" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLossContingencyDisclosures"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockTables" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="ntrs-20110930.xsd#Role_NotesToFinancialStatementsDebtDisclosureTextBlock" roleURI="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock"/>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DocumentDocumentandEntityInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfFinancialPositionUnclassified-DepositBasedOperations">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="us-gaap_AvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndDueFromBanks" xlink:label="us-gaap_CashAndDueFromBanks"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_ClientSecuritySettlementReceivables" xlink:label="ntrs_ClientSecuritySettlementReceivables"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Deposits" xlink:label="us-gaap_Deposits"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepositsSavingsDeposits" xlink:label="us-gaap_DepositsSavingsDeposits"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FederalFundsPurchased" xlink:label="us-gaap_FederalFundsPurchased"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell" xlink:label="us-gaap_FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="us-gaap_HeldToMaturitySecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestBearingDepositLiabilitiesForeign" xlink:label="us-gaap_InterestBearingDepositLiabilitiesForeign"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestBearingDepositsInBanks" xlink:label="us-gaap_InterestBearingDepositsInBanks"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_InterestBearingDepositsInFederalReserveAndOtherCentralBanks" xlink:label="ntrs_InterestBearingDepositsInFederalReserveAndOtherCentralBanks"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="us-gaap_LoansAndLeasesReceivableAllowance"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableCommercial" xlink:label="us-gaap_LoansAndLeasesReceivableCommercial"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableConsumer" xlink:label="us-gaap_LoansAndLeasesReceivableConsumer"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="us-gaap_MarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestBearingDepositLiabilitiesDomestic" xlink:label="us-gaap_NoninterestBearingDepositLiabilitiesDomestic"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestBearingDepositLiabilitiesForeign" xlink:label="us-gaap_NoninterestBearingDepositLiabilitiesForeign"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherBorrowings" xlink:label="us-gaap_OtherBorrowings"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="us-gaap_OtherLiabilities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLongTermDebt" xlink:label="us-gaap_OtherLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchase" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SeniorNotes" xlink:label="us-gaap_SeniorNotes"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TimeDeposits" xlink:label="us-gaap_TimeDeposits"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingSecurities" xlink:label="us-gaap_TradingSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="us-gaap_TreasuryStockValue"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TrustPreferredSecurities" xlink:label="ntrs_TrustPreferredSecurities"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_CashAndDueFromBanks" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_InterestBearingDepositsInBanks" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="ntrs_InterestBearingDepositsInFederalReserveAndOtherCentralBanks" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_MarketableSecurities" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_LoansAndLeasesReceivableAllowance" order="1.1200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="ntrs_ClientSecuritySettlementReceivables" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Goodwill" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_OtherAssets" order="1.1600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_NoninterestBearingDepositLiabilitiesDomestic" order="1.1700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_DepositsSavingsDeposits" order="1.1800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_TimeDeposits" order="1.1900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_NoninterestBearingDepositLiabilitiesForeign" order="1.2000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_InterestBearingDepositLiabilitiesForeign" order="1.2100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Deposits" order="1.2200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_FederalFundsPurchased" order="1.2300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase" order="1.2400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_OtherBorrowings" order="1.2500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_SeniorNotes" order="1.2600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_OtherLongTermDebt" order="1.2700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="ntrs_TrustPreferredSecurities" order="1.2800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_OtherLiabilities" order="1.2900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_Liabilities" order="1.3000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity" order="1.3600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansAndLeasesReceivableCommercial" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansAndLeasesReceivableConsumer" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_MarketableSecurities" xlink:to="us-gaap_AvailableForSaleSecurities" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_MarketableSecurities" xlink:to="us-gaap_HeldToMaturitySecurities" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_MarketableSecurities" xlink:to="us-gaap_TradingSecurities" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_CommonStockValue" order="1.3100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AdditionalPaidInCapitalCommonStock" order="1.3200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="1.3300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="1.3400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_TreasuryStockValue" order="1.3500" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfFinancialPositionUnclassified-DepositBasedOperationsParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfIncomeInterestBasedRevenue">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_EmployeeBenefits" xlink:label="ntrs_EmployeeBenefits"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_EquipmentAndSoftwareExpense" xlink:label="ntrs_EquipmentAndSoftwareExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="us-gaap_InterestAndDividendIncomeOperating"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="us-gaap_InterestIncomeExpenseNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="us-gaap_NoninterestExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="us-gaap_NoninterestIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:label="us-gaap_NoninterestIncomeOtherOperatingIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OccupancyNet" xlink:label="us-gaap_OccupancyNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="us-gaap_OtherNoninterestExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PrincipalInvestmentGainsLosses" xlink:label="us-gaap_PrincipalInvestmentGainsLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SalariesWagesAndIncentives" xlink:label="ntrs_SalariesWagesAndIncentives"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecurityCommissionsandTradingIncome" xlink:label="ntrs_SecurityCommissionsandTradingIncome"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TreasuryManagementFees" xlink:label="ntrs_TreasuryManagementFees"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TrustInvestmentAndOtherServicingFees" xlink:label="ntrs_TrustInvestmentAndOtherServicingFees"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_VisaIndemnificationChargesBenefit" xlink:label="ntrs_VisaIndemnificationChargesBenefit"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_NoninterestIncome" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" order="1.1200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_NoninterestExpense" order="1.2000" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="us-gaap_InterestIncomeExpenseNet" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="us-gaap_ProvisionForLoanAndLeaseLosses" order="1.1100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestIncomeExpenseNet" xlink:to="us-gaap_InterestAndDividendIncomeOperating" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestIncomeExpenseNet" xlink:to="us-gaap_InterestExpense" order="1.0900" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="1.2100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="1.2200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="us-gaap_NetIncomeLoss" order="1.2300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="ntrs_SalariesWagesAndIncentives" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="ntrs_EmployeeBenefits" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="us-gaap_ProfessionalFees" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="ntrs_EquipmentAndSoftwareExpense" order="1.1600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="us-gaap_OccupancyNet" order="1.1700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="ntrs_VisaIndemnificationChargesBenefit" order="1.1800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestExpense" xlink:to="us-gaap_OtherNoninterestExpense" order="1.1900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="ntrs_TrustInvestmentAndOtherServicingFees" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="ntrs_TreasuryManagementFees" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="ntrs_SecurityCommissionsandTradingIncome" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="us-gaap_NoninterestIncomeOtherOperatingIncome" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NoninterestIncome" xlink:to="us-gaap_PrincipalInvestmentGainsLosses" order="1.0600" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfOtherComprehensiveIncome">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_NetIncomeLoss" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" order="1.0500" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfIncomeInterestBasedRevenueParenthetical">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_InvestmentSecurityGainsLossesNet" xlink:label="ntrs_InvestmentSecurityGainsLossesNet"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_OtherThanTemporaryImpairmentLosses" xlink:label="ntrs_OtherThanTemporaryImpairmentLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PrincipalInvestmentGainsLosses" xlink:label="us-gaap_PrincipalInvestmentGainsLosses"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PrincipalInvestmentGainsLosses" xlink:to="ntrs_OtherThanTemporaryImpairmentLosses" order="1.0100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PrincipalInvestmentGainsLosses" xlink:to="us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" order="1.0200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PrincipalInvestmentGainsLosses" xlink:to="ntrs_InvestmentSecurityGainsLossesNet" order="1.0300" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/StatementOfCashFlowsIndirectDepositBasedOperations">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_AmortizationOfComputerSoftware" xlink:label="ntrs_AmortizationOfComputerSoftware"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepreciationNonproduction" xlink:label="us-gaap_DepreciationNonproduction"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnInvestments" xlink:label="us-gaap_GainLossOnInvestments"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="us-gaap_IncreaseDecreaseInDeposits"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInDerivativeAssets" xlink:label="us-gaap_IncreaseDecreaseInDerivativeAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInFederalFundsPurchased" xlink:label="us-gaap_IncreaseDecreaseInFederalFundsPurchased"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="us-gaap_IncreaseDecreaseInReceivables"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_NetChangeInClientSecuritySettlementReceivables" xlink:label="ntrs_NetChangeInClientSecuritySettlementReceivables"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="us-gaap_PaymentsForProceedsFromLoansAndLeases"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInterestEarningAssets" xlink:label="us-gaap_PaymentsForProceedsFromOtherInterestEarningAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForSoftware" xlink:label="us-gaap_PaymentsForSoftware"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="us-gaap_PaymentsOfDividendsCommonStock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="us-gaap_PaymentsToAcquireHeldToMaturitySecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PensionContributions" xlink:label="us-gaap_PensionContributions"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet" xlink:label="us-gaap_ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" xlink:label="us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase" xlink:label="us-gaap_ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_ProceedsFromTermFederalFundsPurchased" xlink:label="ntrs_ProceedsFromTermFederalFundsPurchased"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_RepaymentsOfTermFederalFundsPurchased" xlink:label="ntrs_RepaymentsOfTermFederalFundsPurchased"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_VisaIndemnificationChargesBenefit" xlink:label="ntrs_VisaIndemnificationChargesBenefit"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities" order="1.2800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities" order="1.4100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" order="1.4200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_IncreaseDecreaseInDeposits" order="1.2900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_IncreaseDecreaseInFederalFundsPurchased" order="1.3000" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase" order="1.3100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromRepaymentsOfShortTermDebt" order="1.3200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="ntrs_ProceedsFromTermFederalFundsPurchased" order="1.3300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="ntrs_RepaymentsOfTermFederalFundsPurchased" order="1.3400" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt" order="1.3500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_RepaymentsOfLongTermDebt" order="1.3600" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock" order="1.3700" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromStockOptionsExercised" order="1.3800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsOfDividendsCommonStock" order="1.3900" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" order="1.4000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" order="1.1600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromOtherInterestEarningAssets" order="1.1700" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquireHeldToMaturitySecurities" order="1.1800" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" order="1.1900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquireAvailableForSaleSecurities" order="1.2000" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities" order="1.2100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromLoansAndLeases" order="1.2200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" order="1.2300" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsForSoftware" order="1.2400" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="ntrs_NetChangeInClientSecuritySettlementReceivables" order="1.2500" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" order="1.2600" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities" order="1.2700" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetIncomeLoss" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_GainLossOnInvestments" order="1.0200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" order="1.0300" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_ProvisionForLoanAndLeaseLosses" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_DepreciationNonproduction" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="ntrs_AmortizationOfComputerSoftware" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_PensionContributions" order="1.0800" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="ntrs_VisaIndemnificationChargesBenefit" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInReceivables" order="1.1000" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInInterestPayableNet" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInDerivativeAssets" order="1.1200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" order="1.1300" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevel">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="us-gaap_AssetsFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="us-gaap_AvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_DerivativeAssetPositionFairValue" xlink:label="ntrs_DerivativeAssetPositionFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="us-gaap_InvestmentsFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="us-gaap_LiabilitiesFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsFairValueDisclosure" xlink:label="us-gaap_OtherAssetsFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesFairValueDisclosure" xlink:label="us-gaap_OtherLiabilitiesFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TotalOtherAssetsFairValueDisclosure" xlink:label="ntrs_TotalOtherAssetsFairValueDisclosure"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingSecurities" xlink:label="us-gaap_TradingSecurities"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="us-gaap_InvestmentsFairValueDisclosure" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="ntrs_TotalOtherAssetsFairValueDisclosure" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InvestmentsFairValueDisclosure" xlink:to="us-gaap_AvailableForSaleSecurities" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InvestmentsFairValueDisclosure" xlink:to="us-gaap_TradingSecurities" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesFairValueDisclosure" xlink:to="us-gaap_OtherLiabilitiesFairValueDisclosure" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesFairValueDisclosure" xlink:to="us-gaap_DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_TotalOtherAssetsFairValueDisclosure" xlink:to="us-gaap_OtherAssetsFairValueDisclosure" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_TotalOtherAssetsFairValueDisclosure" xlink:to="ntrs_DerivativeAssetPositionFairValue" order="1.0700" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisSegregatedByFairValueHierarchyLevelParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureChangesInLevel3Assets">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureFairValueMeasurementsFairValueHierarchyAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureChangesInLevel3Liabilities">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasis">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAssetsMeasuredAtFairValueOnANonrecurringBasisParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureBookAndFairValuesOfFinancialInstruments">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAmortizedCostAndFairValuesOfSecurities">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="us-gaap_AvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain" xlink:label="us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" xlink:label="us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="us-gaap_HeldToMaturitySecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain" xlink:label="us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" xlink:label="us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesAmortizedCost" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecurities" xlink:to="us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" order="1.0300" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecurities" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" order="1.0600" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureMaturityOfSecurities">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="us-gaap_HeldToMaturitySecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" order="1.1200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecurities" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecurities" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecurities" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecurities" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" order="1.1600" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureSecuritiesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureSecuritiesContinuousUnrealizedLossPosition">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPositionAggregateLosses" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPositionAggregateLosses"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPositionFairValue"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="ntrs_SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_SecuritiesContinuousUnrealizedLossPositionAggregateLosses" xlink:to="ntrs_SecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_SecuritiesContinuousUnrealizedLossPositionAggregateLosses" xlink:to="ntrs_SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_SecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="ntrs_SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_SecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="ntrs_SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" order="1.0300" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureBookValuesUltimateDefaultRatesAndLossSeverityRatesForTheNonAgencyResidentialMortgageBackedSecuritiesPortfolioBySecurityType">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureCreditLossesOnDebtSecurities">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_OtherThanTemporaryImpairmentLossesRecognizedInEarnings" xlink:label="ntrs_OtherThanTemporaryImpairmentLossesRecognizedInEarnings"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TotalOtherThanTemporaryImpairmentLossesOnInvestments" xlink:label="ntrs_TotalOtherThanTemporaryImpairmentLossesOnInvestments"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_OtherThanTemporaryImpairmentLossesRecognizedInEarnings" xlink:to="ntrs_TotalOtherThanTemporaryImpairmentLossesOnInvestments" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_OtherThanTemporaryImpairmentLossesRecognizedInEarnings" xlink:to="us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureCreditRelatedLossesRecognizedInEarningsOnDebtSecuritiesOtherthantemporarilyImpaired">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureDebtSecuritiesHeldForWhichAnOtherThanTemporaryImpairmentLossHasBeenRecognizedInTheCurrentPeriodOrPreviously">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAdjustmentTax" xlink:label="ntrs_AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAdjustmentTax"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_AccumulatedOtherComprehensiveIncomeLossNoncreditPortionOfOtherThanTemporarilyImpairedSecuritiesBeforeTax" xlink:label="ntrs_AccumulatedOtherComprehensiveIncomeLossNoncreditPortionOfOtherThanTemporarilyImpairedSecuritiesBeforeTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities" xlink:to="ntrs_AccumulatedOtherComprehensiveIncomeLossNoncreditPortionOfOtherThanTemporarilyImpairedSecuritiesBeforeTax" order="1.0100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities" xlink:to="ntrs_AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAdjustmentTax" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAmountsOutstandingInSelectedLoanCategories">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LeasesReceivableCommercialLeaseFinancing" xlink:label="us-gaap_LeasesReceivableCommercialLeaseFinancing"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="us-gaap_LoansAndLeasesReceivableAllowance"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableForeignNetOfDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableForeignNetOfDeferredIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableOther" xlink:label="us-gaap_LoansAndLeasesReceivableOther"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_LoansAndLeasesReceivablePrivateClient" xlink:label="ntrs_LoansAndLeasesReceivablePrivateClient"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_LoansAndLeasesReceivableResidentialRealEstate" xlink:label="ntrs_LoansAndLeasesReceivableResidentialRealEstate"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansReceivableCommercialFinancialAndAgricultural" xlink:label="us-gaap_LoansReceivableCommercialFinancialAndAgricultural"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansReceivableCommercialRealEstate" xlink:label="us-gaap_LoansReceivableCommercialRealEstate"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansReceivableCommercialFinancialAndAgricultural" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansReceivableCommercialRealEstate" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LeasesReceivableCommercialLeaseFinancing" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansAndLeasesReceivableForeignNetOfDeferredIncome" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="ntrs_LoansAndLeasesReceivableResidentialRealEstate" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="ntrs_LoansAndLeasesReceivablePrivateClient" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_LoansAndLeasesReceivableOther" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="us-gaap_LoansAndLeasesReceivableAllowance" order="1.0200" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureLoansAndLeasesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureCreditQualityIndicators">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureBalancesAndDelinquencyStatusOfPerformingAndNonperformingLoansAndLeasesBySegmentAndClassAsWellAsTotalOtherRealEstateOwnedAndNonperformingAsset">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue" xlink:label="us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue" xlink:label="us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentCurrent" order="1.0400" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureImpairedLoansBySegmentsAndClass">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureAverageRecordedInvestmentInImpairedLoansAndInterestIncomeThatWouldHaveBeenRecordedOnNonperformingLoans">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalanceOfThoseTDRs">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNumberOfLoansAndLeasesModifiedInTroubledDebtRestructuringsDuringThePrevious12MonthsWhichBecameDisclosureNonperformingAsWellAsTheRecordedInvestmentAndUnpaidPrincipalBalance">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureChangesInTheAllowanceForCreditLossesBySegment">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ValuationAllowancesAndReservesRecoveries" xlink:label="us-gaap_ValuationAllowancesAndReservesRecoveries"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet" xlink:to="us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs" order="1.0100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet" xlink:to="us-gaap_ValuationAllowancesAndReservesRecoveries" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureReserveForCreditLossesAndRecordedInvestmentsInLoansAndLeasesBySegment">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:label="us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:label="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="us-gaap_LoansAndLeasesReceivableAllowance"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_LoansAndLeasesReceivableAllowanceForLosses" xlink:label="ntrs_LoansAndLeasesReceivableAllowanceForLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_UnfundedCommitmentsAndStandbyLettersOfCreditAllowance" xlink:label="ntrs_UnfundedCommitmentsAndStandbyLettersOfCreditAllowance"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_LoansAndLeasesReceivableAllowanceForLosses" xlink:to="us-gaap_LoansAndLeasesReceivableAllowance" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_LoansAndLeasesReceivableAllowanceForLosses" xlink:to="ntrs_UnfundedCommitmentsAndStandbyLettersOfCreditAllowance" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosurePledgedAssetsAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureChangesInCarryingAmountsOfGoodwillByBusinessUnit">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureOtherIntangibleAssetsSubjectToAmortization">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" order="1.0200" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureEarningsContributionOfNorthernTrustsBusinessUnits">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment" xlink:label="ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment" xlink:label="ntrs_IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestRevenueExpense" xlink:label="us-gaap_InterestRevenueExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="us-gaap_NoninterestExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_SegmentReportingInformationNoninterestIncomeOtherIncome" xlink:label="ntrs_SegmentReportingInformationNoninterestIncomeOtherIncome"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_TrustInvestmentAndOtherServicingFees" xlink:label="ntrs_TrustInvestmentAndOtherServicingFees"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment" xlink:to="us-gaap_Revenues" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment" xlink:to="us-gaap_ProvisionForLoanAndLeaseLosses" order="1.0500" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment" xlink:to="us-gaap_NoninterestExpense" order="1.0600" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="ntrs_IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="ntrs_IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment" order="1.0800" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Revenues" xlink:to="ntrs_TrustInvestmentAndOtherServicingFees" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Revenues" xlink:to="ntrs_SegmentReportingInformationNoninterestIncomeOtherIncome" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_InterestRevenueExpense" order="1.0300" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureEarningsContributionOfNorthernTrustsBusinessUnitsParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureComponentsOfAccumulatedOtherComprehensiveIncomeLoss">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureComputationsOfNetIncomeLossPerCommonShare">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_NetIncomeLossAllocatedToCommonStockholdersBasic" xlink:label="ntrs_NetIncomeLossAllocatedToCommonStockholdersBasic"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities" xlink:label="us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_NetIncomeLossAllocatedToCommonStockholdersBasic" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ntrs_NetIncomeLossAllocatedToCommonStockholdersBasic" xlink:to="us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities" order="1.0200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" order="1.0400" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNetIncomePerCommonShareComputationsAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureComponentsOfNetInterestIncome">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="us-gaap_InterestAndDividendIncomeOperating"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseDeposits" xlink:label="us-gaap_InterestExpenseDeposits"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseFederalFundsPurchased" xlink:label="us-gaap_InterestExpenseFederalFundsPurchased"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseJuniorSubordinatedDebentures" xlink:label="us-gaap_InterestExpenseJuniorSubordinatedDebentures"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_InterestExpenseOtherBorrowings" xlink:label="ntrs_InterestExpenseOtherBorrowings"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseOtherLongTermDebt" xlink:label="us-gaap_InterestExpenseOtherLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase" xlink:label="us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_InterestExpenseSeniorNotes" xlink:label="ntrs_InterestExpenseSeniorNotes"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeDepositsWithFinancialInstitutions" xlink:label="us-gaap_InterestIncomeDepositsWithFinancialInstitutions"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_InterestIncomeFederalReserveDepositsAndOther" xlink:label="ntrs_InterestIncomeFederalReserveDepositsAndOther"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxable" xlink:label="us-gaap_InterestIncomeSecuritiesTaxable"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt" xlink:label="us-gaap_InterestIncomeSecuritiesTaxExempt"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="us-gaap_InterestAndFeeIncomeLoansAndLeases" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="us-gaap_InterestIncomeSecuritiesTaxable" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="us-gaap_InterestIncomeSecuritiesTaxExempt" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="us-gaap_InterestIncomeDepositsWithFinancialInstitutions" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="ntrs_InterestIncomeFederalReserveDepositsAndOther" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpenseDeposits" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpenseFederalFundsPurchased" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="ntrs_InterestExpenseOtherBorrowings" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="ntrs_InterestExpenseSeniorNotes" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpenseOtherLongTermDebt" order="1.1200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpenseJuniorSubordinatedDebentures" order="1.1300" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureVisaMembershipAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNetPeriodicPensionExpenseOfNorthernTrustsUSAndNonUSPensionPlansSupplementalPensionPlanAndOtherPostretirementPlan">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_DefinedBenefitPlanCurtailmentGainLoss" xlink:label="ntrs_DefinedBenefitPlanCurtailmentGainLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="us-gaap_DefinedBenefitPlanInterestCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="us-gaap_DefinedBenefitPlanServiceCost"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanServiceCost" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanInterestCost" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" order="1.0300" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" order="1.0400" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="ntrs_DefinedBenefitPlanCurtailmentGainLoss" order="1.0600" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureCompensationExpenseForShareBasedPaymentArrangementsAndTheAssociatedTaxImpacts">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureVariableInterestEntitiesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureContingentLiabilitiesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureDerivativeFinancialInstrumentsAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNotionalAndFairValueAmountsOfClientrelatedAndTradingDerivativeFinancialInstruments">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToClientRelatedAndTradingDerivativeFinancialInstruments">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureTypesAndClassificationsOfDerivativeInstrumentsDesignatedAsHedges">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToFairValueHedges">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureCashFlowHedgeDerivativeGainsAndLossesRecognizedInAOCIAndTheAmountsReclassifiedToEarnings">
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_CashFlowHedgeGainLossReclassifiedToCompensationExpenseNet" xlink:label="ntrs_CashFlowHedgeGainLossReclassifiedToCompensationExpenseNet"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_CashFlowHedgeGainLossReclassifiedToEmployeeBenefitsNet" xlink:label="ntrs_CashFlowHedgeGainLossReclassifiedToEmployeeBenefitsNet"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_CashFlowHedgeGainLossReclassifiedToEquipmentAndSoftwareExpenseNet" xlink:label="ntrs_CashFlowHedgeGainLossReclassifiedToEquipmentAndSoftwareExpenseNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowHedgeGainLossReclassifiedToInterestExpenseNet" xlink:label="us-gaap_CashFlowHedgeGainLossReclassifiedToInterestExpenseNet"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_CashFlowHedgeGainLossReclassifiedToInterestIncomeNet" xlink:label="ntrs_CashFlowHedgeGainLossReclassifiedToInterestIncomeNet"/>
    <loc xlink:type="locator" xlink:href="ntrs-20110930.xsd#ntrs_CashFlowHedgeGainLossReclassifiedToOccupancyExpenseNet" xlink:label="ntrs_CashFlowHedgeGainLossReclassifiedToOccupancyExpenseNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowHedgeGainLossReclassifiedToOtherExpenseNet" xlink:label="us-gaap_CashFlowHedgeGainLossReclassifiedToOtherExpenseNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowHedgeGainLossReclassifiedToOtherIncomeNet" xlink:label="us-gaap_CashFlowHedgeGainLossReclassifiedToOtherIncomeNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowHedgeGainLossReclassifiedToRevenueNet" xlink:label="us-gaap_CashFlowHedgeGainLossReclassifiedToRevenueNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="us-gaap_CashFlowHedgeGainLossReclassifiedToRevenueNet" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="us-gaap_CashFlowHedgeGainLossReclassifiedToOtherIncomeNet" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="ntrs_CashFlowHedgeGainLossReclassifiedToInterestIncomeNet" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="us-gaap_CashFlowHedgeGainLossReclassifiedToInterestExpenseNet" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="ntrs_CashFlowHedgeGainLossReclassifiedToCompensationExpenseNet" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="ntrs_CashFlowHedgeGainLossReclassifiedToEmployeeBenefitsNet" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="ntrs_CashFlowHedgeGainLossReclassifiedToEquipmentAndSoftwareExpenseNet" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="ntrs_CashFlowHedgeGainLossReclassifiedToOccupancyExpenseNet" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:to="us-gaap_CashFlowHedgeGainLossReclassifiedToOtherExpenseNet" order="1.0900" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureNetInvestmentHedgeGainsAndLossesRecognizedInAOCI">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureTypesAndClassificationsOfRiskManagementDerivativeInstrumentsNotFormallyDesignatedAsHedgesIncludingNotionalAndFairValues">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureGainsAndLossesRecordedInTheConsolidatedStatementOfIncomeRelatedToDerivativeInstrumentsNotFormallyDesignatedAsHedges">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/DisclosureDebtIssuanceAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDescriptionOfNewAccountingPronouncementsNotYetAdopted">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLoansNotesTradeAndOtherReceivablesDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsAllowanceForCreditLossesTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsAllowanceForCreditLossesTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsRestrictedAssetsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsInterestIncomeAndInterestExpenseDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsVisaMembershipTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfVariableInterestEntitiesTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsLossContingencyDisclosures">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.ntrs.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock">
  </calculationLink>
</linkbase>
