<?xml version="1.0" encoding="us-ascii"?>
<!-- DFS ActiveDisclosure(SM) XBRL Schema Document - http://www.dfsco.com/financial-services/ -->
<!-- Creation Date      : 2018-03-09T21:55:23.4494713+00:00 -->
<!-- Version            : 2.9.6605.1333 -->
<!-- Package ID         : 2dbaef1de9884f41a5e3c34669f15e3f -->
<!-- Copyright (c) 2018 Donnelley Financial, LLC. All Rights Reserved. -->
<schema xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2017-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2011-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:hckt="http://www.thehackettgroup.com/20171229" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:us-gaap="http://fasb.org/us-gaap/2017-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2014-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2017-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2017-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.thehackettgroup.com/20171229" xmlns="http://www.w3.org/2001/XMLSchema">
  <import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <import schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd" namespace="http://fasb.org/us-gaap/2017-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2014-01-31" />
  <import schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-types-2017-01-31.xsd" namespace="http://fasb.org/us-types/2017-01-31" />
  <import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
  <import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <import schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" namespace="http://xbrl.sec.gov/country/2017-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd" namespace="http://xbrl.sec.gov/currency/2017-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/exch/2017/exch-2017-01-31.xsd" namespace="http://xbrl.sec.gov/exch/2017-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" namespace="http://xbrl.sec.gov/invest/2013-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" namespace="http://xbrl.sec.gov/sic/2011-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" namespace="http://xbrl.sec.gov/stpr/2011-01-31" />
  <annotation>
    <appinfo>
      <link:roleType id="TemplateLink" roleURI="http://www.thehackettgroup.com/20171229/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="hckt-20171229_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="hckt-20171229_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="hckt-20171229_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="hckt-20171229_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedBalanceSheets" id="Role_StatementConsolidatedBalanceSheets">
        <link:definition>100010 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical" id="Role_StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>100020 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedStatementsOfOperations" id="Role_StatementConsolidatedStatementsOfOperations">
        <link:definition>100030 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedStatementsOfOperationsParenthetical" id="Role_StatementConsolidatedStatementsOfOperationsParenthetical">
        <link:definition>100040 - Statement - Consolidated Statements of Operations (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncome" id="Role_StatementConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>100050 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedStatementsOfShareholdersEquity" id="Role_StatementConsolidatedStatementsOfShareholdersEquity">
        <link:definition>100060 - Statement - Consolidated Statements of Shareholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/StatementConsolidatedStatementsOfCashFlows" id="Role_StatementConsolidatedStatementsOfCashFlows">
        <link:definition>100070 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformation" id="Role_DisclosureBasisOfPresentationAndGeneralInformation">
        <link:definition>100080 - Disclosure - Basis of Presentation and General Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureFairValueMeasurement" id="Role_DisclosureFairValueMeasurement">
        <link:definition>100090 - Disclosure - Fair Value Measurement</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccountsReceivableAndUnbilledRevenueNet" id="Role_DisclosureAccountsReceivableAndUnbilledRevenueNet">
        <link:definition>100100 - Disclosure - Accounts Receivable and Unbilled Revenue, Net</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosurePropertyAndEquipmentNet" id="Role_DisclosurePropertyAndEquipmentNet">
        <link:definition>100110 - Disclosure - Property and Equipment, Net</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccruedExpensesAndOtherLiabilities" id="Role_DisclosureAccruedExpensesAndOtherLiabilities">
        <link:definition>100120 - Disclosure - Accrued Expenses and Other Liabilities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureRestructuringCosts" id="Role_DisclosureRestructuringCosts">
        <link:definition>100130 - Disclosure - Restructuring Costs</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureLeaseCommitments" id="Role_DisclosureLeaseCommitments">
        <link:definition>100140 - Disclosure - Lease Commitments</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureCreditFacility" id="Role_DisclosureCreditFacility">
        <link:definition>100150 - Disclosure - Credit Facility</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes">
        <link:definition>100160 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensation" id="Role_DisclosureStockBasedCompensation">
        <link:definition>100170 - Disclosure - Stock Based Compensation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureShareholdersEquity" id="Role_DisclosureShareholdersEquity">
        <link:definition>100180 - Disclosure - Shareholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBenefitPlan" id="Role_DisclosureBenefitPlan">
        <link:definition>100190 - Disclosure - Benefit Plan</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureTransactionsWithRelatedParties" id="Role_DisclosureTransactionsWithRelatedParties">
        <link:definition>100200 - Disclosure - Transactions with Related Parties</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureLitigation" id="Role_DisclosureLitigation">
        <link:definition>100210 - Disclosure - Litigation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAcquisition" id="Role_DisclosureAcquisition">
        <link:definition>100220 - Disclosure - Acquisition</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformation" id="Role_DisclosureGeographicAndServiceGroupInformation">
        <link:definition>100230 - Disclosure - Geographic and Service Group Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureQuarterlyFinancialInformation" id="Role_DisclosureQuarterlyFinancialInformation">
        <link:definition>100240 - Disclosure - Quarterly Financial Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureScheduleIIValuationAndQualifyingAccountsAndReserves" id="Role_DisclosureScheduleIIValuationAndQualifyingAccountsAndReserves">
        <link:definition>100250 - Disclosure - Schedule II - Valuation and Qualifying Accounts and Reserves</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationPolicies" id="Role_DisclosureBasisOfPresentationAndGeneralInformationPolicies">
        <link:definition>100260 - Disclosure - Basis of Presentation and General Information (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationTables" id="Role_DisclosureBasisOfPresentationAndGeneralInformationTables">
        <link:definition>100270 - Disclosure - Basis of Presentation and General Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccountsReceivableAndUnbilledRevenueNetTables" id="Role_DisclosureAccountsReceivableAndUnbilledRevenueNetTables">
        <link:definition>100280 - Disclosure - Accounts Receivable and Unbilled Revenue, Net (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosurePropertyAndEquipmentNetTables" id="Role_DisclosurePropertyAndEquipmentNetTables">
        <link:definition>100290 - Disclosure - Property and Equipment, Net (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccruedExpensesAndOtherLiabilitiesTables" id="Role_DisclosureAccruedExpensesAndOtherLiabilitiesTables">
        <link:definition>100300 - Disclosure - Accrued Expenses And Other Liabilities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureRestructuringCostsTables" id="Role_DisclosureRestructuringCostsTables">
        <link:definition>100310 - Disclosure - Restructuring Costs (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureLeaseCommitmentsTables" id="Role_DisclosureLeaseCommitmentsTables">
        <link:definition>100320 - Disclosure - Lease Commitments (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureCreditFacilityTables" id="Role_DisclosureCreditFacilityTables">
        <link:definition>100330 - Disclosure - Credit Facility (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesTables" id="Role_DisclosureIncomeTaxesTables">
        <link:definition>100340 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationTables" id="Role_DisclosureStockBasedCompensationTables">
        <link:definition>100350 - Disclosure - Stock Based Compensation (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAcquisitionTables" id="Role_DisclosureAcquisitionTables">
        <link:definition>100360 - Disclosure - Acquisition (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformationTables" id="Role_DisclosureGeographicAndServiceGroupInformationTables">
        <link:definition>100370 - Disclosure - Geographic and Service Group Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureQuarterlyFinancialInformationTables" id="Role_DisclosureQuarterlyFinancialInformationTables">
        <link:definition>100380 - Disclosure - Quarterly Financial Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationNarrativeDetails" id="Role_DisclosureBasisOfPresentationAndGeneralInformationNarrativeDetails">
        <link:definition>100390 - Disclosure - Basis of Presentation and General Information (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationCarryingAmountAndActivityOfGoodwillDetails" id="Role_DisclosureBasisOfPresentationAndGeneralInformationCarryingAmountAndActivityOfGoodwillDetails">
        <link:definition>100400 - Disclosure - Basis of Presentation and General Information (Carrying Amount And Activity Of Goodwill) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationComponentsOfOtherIntangibleAssetsIncludedInOtherAssetsDetails" id="Role_DisclosureBasisOfPresentationAndGeneralInformationComponentsOfOtherIntangibleAssetsIncludedInOtherAssetsDetails">
        <link:definition>100410 - Disclosure - Basis of Presentation and General Information (Components of Other Intangible Assets, Included In Other Assets) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBasisOfPresentationAndGeneralInformationReconciliationOfBasicAndDilutedWeightedAverageSharesDetails" id="Role_DisclosureBasisOfPresentationAndGeneralInformationReconciliationOfBasicAndDilutedWeightedAverageSharesDetails">
        <link:definition>100420 - Disclosure - Basis of Presentation and General Information (Reconciliation of Basic and Diluted Weighted Average Shares) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccountsReceivableAndUnbilledRevenueNetDetails" id="Role_DisclosureAccountsReceivableAndUnbilledRevenueNetDetails">
        <link:definition>100430 - Disclosure - Accounts Receivable and Unbilled Revenue, Net (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosurePropertyAndEquipmentNetScheduleOfPropertyAndEquipmentDetails" id="Role_DisclosurePropertyAndEquipmentNetScheduleOfPropertyAndEquipmentDetails">
        <link:definition>100440 - Disclosure - Property and Equipment, Net (Schedule of Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosurePropertyAndEquipmentNetNarrativeDetails" id="Role_DisclosurePropertyAndEquipmentNetNarrativeDetails">
        <link:definition>100450 - Disclosure - Property and Equipment, Net (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAccruedExpensesAndOtherLiabilitiesDetails" id="Role_DisclosureAccruedExpensesAndOtherLiabilitiesDetails">
        <link:definition>100460 - Disclosure - Accrued Expenses and Other Liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureRestructuringCostsNarrativeDetails" id="Role_DisclosureRestructuringCostsNarrativeDetails">
        <link:definition>100470 - Disclosure - Restructuring Costs (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureRestructuringCostsScheduleOfActivityInRestructuringExpenseAccrualsDetails" id="Role_DisclosureRestructuringCostsScheduleOfActivityInRestructuringExpenseAccrualsDetails">
        <link:definition>100480 - Disclosure - Restructuring Costs (Schedule of Activity in Restructuring Expense Accruals) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureLeaseCommitmentsNarrativeDetails" id="Role_DisclosureLeaseCommitmentsNarrativeDetails">
        <link:definition>100490 - Disclosure - Lease Commitments (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureLeaseCommitmentsFutureMinimumLeaseCommitmentsUnderNonCancelableOperatingLeasesDetails" id="Role_DisclosureLeaseCommitmentsFutureMinimumLeaseCommitmentsUnderNonCancelableOperatingLeasesDetails">
        <link:definition>100500 - Disclosure - Lease Commitments (Future Minimum Lease Commitments Under Non-Cancelable Operating Leases) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureCreditFacilityDetails" id="Role_DisclosureCreditFacilityDetails">
        <link:definition>100510 - Disclosure - Credit Facility (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureCreditFacilityFutureScheduleOfAnnualAmortizationOfPrincipalDetails" id="Role_DisclosureCreditFacilityFutureScheduleOfAnnualAmortizationOfPrincipalDetails">
        <link:definition>100520 - Disclosure - Credit Facility (Future Schedule Of Annual Amortization Of Principal) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesComponentsOfIncomeLossBeforeIncomeTaxesDetails" id="Role_DisclosureIncomeTaxesComponentsOfIncomeLossBeforeIncomeTaxesDetails">
        <link:definition>100530 - Disclosure - Income Taxes (Components of Income (Loss) Before Income Taxes) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesComponentsOfIncomeTaxBenefitExpenseDetails" id="Role_DisclosureIncomeTaxesComponentsOfIncomeTaxBenefitExpenseDetails">
        <link:definition>100540 - Disclosure - Income Taxes (Components of income Tax (Benefit) Expense) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesReconciliationOfTheFederalStatutoryTaxRateWithTheEffectiveTaxRateDetails" id="Role_DisclosureIncomeTaxesReconciliationOfTheFederalStatutoryTaxRateWithTheEffectiveTaxRateDetails">
        <link:definition>100550 - Disclosure - Income Taxes (Reconciliation of The Federal Statutory Tax Rate With The Effective Tax Rate) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesComponentsOfTheNetDeferredIncomeTaxAssetLiabilityDetails" id="Role_DisclosureIncomeTaxesComponentsOfTheNetDeferredIncomeTaxAssetLiabilityDetails">
        <link:definition>100560 - Disclosure - Income Taxes (Components of The Net Deferred Income Tax Asset (Liability)) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesNarrativeDetails" id="Role_DisclosureIncomeTaxesNarrativeDetails">
        <link:definition>100570 - Disclosure - Income Taxes (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureIncomeTaxesDetailAndActivityOfTheASC74010LiabilityDetails" id="Role_DisclosureIncomeTaxesDetailAndActivityOfTheASC74010LiabilityDetails">
        <link:definition>100580 - Disclosure - Income Taxes (Detail and Activity of The ASC 740-10 Liability) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationScheduleOfShareBasedCompensationIncludedInNetIncomeDetails" id="Role_DisclosureStockBasedCompensationScheduleOfShareBasedCompensationIncludedInNetIncomeDetails">
        <link:definition>100590 - Disclosure - Stock Based Compensation (Schedule of Share Based Compensation Included in Net Income) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationNarrativeDetails" id="Role_DisclosureStockBasedCompensationNarrativeDetails">
        <link:definition>100600 - Disclosure - Stock Based Compensation (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationSummaryOfStockOptionActivityUnderTheCompanySStockOptionPlansDetails" id="Role_DisclosureStockBasedCompensationSummaryOfStockOptionActivityUnderTheCompanySStockOptionPlansDetails">
        <link:definition>100610 - Disclosure - Stock Based Compensation (Summary of Stock Option Activity Under The Company&apos;s Stock Option Plans) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationOtherInformationPertainingToStockOptionActivityDetails" id="Role_DisclosureStockBasedCompensationOtherInformationPertainingToStockOptionActivityDetails">
        <link:definition>100620 - Disclosure - Stock Based Compensation (Other Information Pertaining To Stock Option Activity) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationSARActivityDetails" id="Role_DisclosureStockBasedCompensationSARActivityDetails">
        <link:definition>100630 - Disclosure - Stock Based Compensation - SAR Activity (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationSummaryOfAssumptionsUsedToDetermineFairValueDetails" id="Role_DisclosureStockBasedCompensationSummaryOfAssumptionsUsedToDetermineFairValueDetails">
        <link:definition>100640 - Disclosure - Stock Based Compensation (Summary of Assumptions Used To Determine Fair Value) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationSummaryOfRestrictedStockUnitActivityDetails" id="Role_DisclosureStockBasedCompensationSummaryOfRestrictedStockUnitActivityDetails">
        <link:definition>100650 - Disclosure - Stock Based Compensation (Summary of Restricted Stock Unit Activity) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureStockBasedCompensationSummaryOfActivityForCommonStockSubjectToVestingRequirementsDetails" id="Role_DisclosureStockBasedCompensationSummaryOfActivityForCommonStockSubjectToVestingRequirementsDetails">
        <link:definition>100660 - Disclosure - Stock Based Compensation (Summary of Activity For Common Stock Subject To Vesting Requirements) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureShareholdersEquityDetails" id="Role_DisclosureShareholdersEquityDetails">
        <link:definition>100670 - Disclosure - Shareholders&apos; Equity (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureBenefitPlanDetails" id="Role_DisclosureBenefitPlanDetails">
        <link:definition>100680 - Disclosure - Benefit Plan (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureTransactionsWithRelatedPartiesDetails" id="Role_DisclosureTransactionsWithRelatedPartiesDetails">
        <link:definition>100690 - Disclosure - Transactions With Related Parties (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAcquisitionNarrativeDetails" id="Role_DisclosureAcquisitionNarrativeDetails">
        <link:definition>100700 - Disclosure - Acquisition (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAcquisitionPurchasePriceAllocationDetails" id="Role_DisclosureAcquisitionPurchasePriceAllocationDetails">
        <link:definition>100710 - Disclosure - Acquisition (Purchase Price Allocation) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureAcquisitionIntangibleAssetsAcquiredDetails" id="Role_DisclosureAcquisitionIntangibleAssetsAcquiredDetails">
        <link:definition>100720 - Disclosure - Acquisition (Intangible Assets Acquired) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformationGeographicRevenueDetails" id="Role_DisclosureGeographicAndServiceGroupInformationGeographicRevenueDetails">
        <link:definition>100730 - Disclosure - Geographic and Service Group Information (Geographic Revenue) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformationLongLivedAssetsAttributableToGeographicAreaDetails" id="Role_DisclosureGeographicAndServiceGroupInformationLongLivedAssetsAttributableToGeographicAreaDetails">
        <link:definition>100740 - Disclosure - Geographic and Service Group Information (Long-Lived Assets Attributable To Geographic Area) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformationNarrativeDetails" id="Role_DisclosureGeographicAndServiceGroupInformationNarrativeDetails">
        <link:definition>100750 - Disclosure - Geographic and Service Group Information (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureGeographicAndServiceGroupInformationRevenueByServiceGroupDetails" id="Role_DisclosureGeographicAndServiceGroupInformationRevenueByServiceGroupDetails">
        <link:definition>100760 - Disclosure - Geographic and Service Group Information (Revenue By Service Group) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureQuarterlyFinancialInformationUnauditedSupplementalQuarterlyFinancialInformationDetails" id="Role_DisclosureQuarterlyFinancialInformationUnauditedSupplementalQuarterlyFinancialInformationDetails">
        <link:definition>100770 - Disclosure - Quarterly Financial Information (Unaudited Supplemental Quarterly Financial Information) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.thehackettgroup.com/20171229/taxonomy/role/DisclosureScheduleIIValuationAndQualifyingAccountsAndReservesDetails" id="Role_DisclosureScheduleIIValuationAndQualifyingAccountsAndReservesDetails">
        <link:definition>100780 - Disclosure - Schedule II - Valuation and Qualifying Accounts and Reserves (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <element id="hckt_IncomeLossBeforeIncomeTaxesDomestic" name="IncomeLossBeforeIncomeTaxesDomestic" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_IncomeLossBeforeIncomeTaxesForeign" name="IncomeLossBeforeIncomeTaxesForeign" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_AccruedLiabilitiesAndOtherLiabilitiesCurrent" name="AccruedLiabilitiesAndOtherLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_AccruedLiabilitiesAndOtherLiabilitiesNoncurrent" name="AccruedLiabilitiesAndOtherLiabilitiesNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_ShareBasedCompensationAcquisitionRelatedExpenses" name="ShareBasedCompensationAcquisitionRelatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_AccountsReceivableAndUnbilledRevenueNetTextBlock" name="AccountsReceivableAndUnbilledRevenueNetTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_GeographicAndServiceGroupInformationTextBlock" name="GeographicAndServiceGroupInformationTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_NatureOfBusinessPolicyPolicyTextBlock" name="NatureOfBusinessPolicyPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_AccountsReceivableAndUnbilledRevenueNetTableTextBlock" name="AccountsReceivableAndUnbilledRevenueNetTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_JibeConsultingIncMember" name="JibeConsultingIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_AecusLimitedMember" name="AecusLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_ScheduleOfGrossRevenueByServiceGroupTableTextBlock" name="ScheduleOfGrossRevenueByServiceGroupTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_BasisOfPresentationAndGeneralInformationLineItems" name="BasisOfPresentationAndGeneralInformationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_BasisOfPresentationAndGeneralInformationTable" name="BasisOfPresentationAndGeneralInformationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_HackettTechnologySolutionsMember" name="HackettTechnologySolutionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_FiniteLivedIntangibleAssetTranslationAdjustments" name="FiniteLivedIntangibleAssetTranslationAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_DilutiveRestrictedStockUnitsAndCommonStockSubjectToVestingRequirements" name="DilutiveRestrictedStockUnitsAndCommonStockSubjectToVestingRequirements" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_DilutiveStockOptionsAndStockAppreciationRights" name="DilutiveStockOptionsAndStockAppreciationRights" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_NumberOfCustomersAccountedForMoreThanFivePercentOfRevenue" name="NumberOfCustomersAccountedForMoreThanFivePercentOfRevenue" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_AccruedCompensationAndBenefits" name="AccruedCompensationAndBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_AccruedShareBasedCompensation" name="AccruedShareBasedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_TermLoanMember" name="TermLoanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_RevolvingLineOfCreditFacilityAndTermLoanMember" name="RevolvingLineOfCreditFacilityAndTermLoanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_DebtInstrumentAdditionalBorrowingCapacity" name="DebtInstrumentAdditionalBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_PledgeOfCapitalStockToUSSubsidiaries" name="PledgeOfCapitalStockToUSSubsidiaries" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_PledgeOfCapitalStockToDirectForeignSubsidiaries" name="PledgeOfCapitalStockToDirectForeignSubsidiaries" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_EffectiveIncomeTaxRateReconciliationTaxReformImpactOnDeferredTaxes" name="EffectiveIncomeTaxRateReconciliationTaxReformImpactOnDeferredTaxes" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_EffectiveIncomeTaxRateReconciliationForeignExchangeGainLoss" name="EffectiveIncomeTaxRateReconciliationForeignExchangeGainLoss" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_DeferredTaxAssetsOperatingLossAndTaxCreditsCarryforwards" name="DeferredTaxAssetsOperatingLossAndTaxCreditsCarryforwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetsAndLiabilityProvisionalIncomeTaxBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetsAndLiabilityProvisionalIncomeTaxBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_UnrecognizedTaxBenefitsPeriodDecrease" name="UnrecognizedTaxBenefitsPeriodDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_StockOptionsAndStockAppreciationRightsMember" name="StockOptionsAndStockAppreciationRightsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_CommonStockSubjectToVestingRequirementsMember" name="CommonStockSubjectToVestingRequirementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_TechnolabInternationalCorporationMember" name="TechnolabInternationalCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_StockAppreciationRightsSarsAndStockOptionsMember" name="StockAppreciationRightsSarsAndStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_JibeConsultingIncAndTechnolabInternationalCorporationMember" name="JibeConsultingIncAndTechnolabInternationalCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_PerformanceBasedStockOptionGrantProFormaEpsGrowthForVesting" name="PerformanceBasedStockOptionGrantProFormaEpsGrowthForVesting" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_PerformanceBasedStockOptionGrantProFormaEbitdaGrowthForVesting" name="PerformanceBasedStockOptionGrantProFormaEbitdaGrowthForVesting" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ExistingRestrictedStockUnitBonusOpportunity" name="ExistingRestrictedStockUnitBonusOpportunity" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_LongTermCashRate" name="LongTermCashRate" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_PerformanceBasedStockOptionVestingTerm" name="PerformanceBasedStockOptionVestingTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_GrowthMetricTrailingPeriod" name="GrowthMetricTrailingPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpiredInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpiredInPeriodWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsWeightedAverageGrantDateFairValueExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsWeightedAverageGrantDateFairValueExercisableNumber" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingOptionOnPerformanceBased" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingOptionOnPerformanceBased" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionOne" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionOne" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryTwo" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryThree" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryThree" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionTwo" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryOne" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryOne" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionThree" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOptionThree" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryOne" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryOne" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryFour" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionOneDuringAnniversaryFour" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryTwo" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryTwo" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryThree" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionThreeDuringAnniversaryThree" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryThree" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryThree" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryFour" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderOptionTwoDuringAnniversaryFour" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_EmployeeServiceShareBasedCompensationNonvestedRestrictedStockUnitAwardsNetCompensationCostNotYetRecognized" name="EmployeeServiceShareBasedCompensationNonvestedRestrictedStockUnitAwardsNetCompensationCostNotYetRecognized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_FutureCompensationExpenseRelatedToNonvestedCommonStockSubjectToVestingRequirements" name="FutureCompensationExpenseRelatedToNonvestedCommonStockSubjectToVestingRequirements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_CompensationCostNotYetRecognizedOnNonvestedCommonStockSubjectToVestingRequirements" name="CompensationCostNotYetRecognizedOnNonvestedCommonStockSubjectToVestingRequirements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_PercentageOfEligibleCompensationAllowedPerGrantPurchase" name="PercentageOfEligibleCompensationAllowedPerGrantPurchase" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_IntervalBetweenEmployeeStockPurchases" name="IntervalBetweenEmployeeStockPurchases" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_EmployeePurchasePriceAsPercentageOfTradingValue" name="EmployeePurchasePriceAsPercentageOfTradingValue" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_MaximumFairMarketValueOfEmployeeStockPurchase" name="MaximumFairMarketValueOfEmployeeStockPurchase" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_EmployeeStockPurchasePlanExpirationDate" name="EmployeeStockPurchasePlanExpirationDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_CumulativeMember" name="CumulativeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_StockRepurchaseMember" name="StockRepurchaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_ExecutiveTeamMember" name="ExecutiveTeamMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_TaxWithholdingMember" name="TaxWithholdingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_StockRepurchaseProgramAdditionalAuthorizedAmount" name="StockRepurchaseProgramAdditionalAuthorizedAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_StockRepurchaseProgramCumulativePurchaseAmount" name="StockRepurchaseProgramCumulativePurchaseAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_WeightedAverageSharesOutstandingIncreaseDecrease" name="WeightedAverageSharesOutstandingIncreaseDecrease" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_BeneficialOwnersOwnershipPercentage" name="BeneficialOwnersOwnershipPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="hckt_WeightedAverageSharesOutstandingAccretive" name="WeightedAverageSharesOutstandingAccretive" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_CashContingentConsiderationMember" name="CashContingentConsiderationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_StockBasedContingentConsiderationMember" name="StockBasedContingentConsiderationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_SellersMember" name="SellersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_KeyPersonnelMember" name="KeyPersonnelMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_CharteredInstituteOfManagementAccountantsMember" name="CharteredInstituteOfManagementAccountantsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableVestingPeriod" name="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableVestingPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_BusinessCombinationContingentConsiderationArrangementsPeriod" name="BusinessCombinationContingentConsiderationArrangementsPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_PurchasePriceAllocationEvaluationPeriodFromAcquisitionDate" name="PurchasePriceAllocationEvaluationPeriodFromAcquisitionDate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_CustomerBacklogMember" name="CustomerBacklogMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeDepreciationAmortizationInterestCorporateOverheadAllocationAndTaxes" name="BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeDepreciationAmortizationInterestCorporateOverheadAllocationAndTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="hckt_InternationalPrimarilyEuropeanCountriesMember" name="InternationalPrimarilyEuropeanCountriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_GoodwillIncludedInForeignAsset" name="GoodwillIncludedInForeignAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="hckt_HackettGroupMember" name="HackettGroupMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="hckt_SapErpSolutionsMember" name="SapErpSolutionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="hckt_ValuationAllowancesAndReservesWriteOffsRecoveries" name="ValuationAllowancesAndReservesWriteOffsRecoveries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
</schema>
