<?xml version="1.0" encoding="us-ascii"?>
<!--Generated by EDGARfilings PROfile 6.2.0.0 Broadridge-->
<xs:schema targetNamespace="http://kirbycorp.com/20190630" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:kex="http://kirbycorp.com/20190630" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:us-types="http://fasb.org/us-types/2019-01-31" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:srt-types="http://fasb.org/srt-types/2019-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="kex-20190630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="kex-20190630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="kex-20190630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="kex-20190630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://kirbycorp.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>000100 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedBalanceSheetsUnaudited" id="CondensedBalanceSheetsUnaudited">
        <link:definition>010000 - Statement - CONDENSED BALANCE SHEETS (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedBalanceSheetsUnauditedParenthetical" id="CondensedBalanceSheetsUnauditedParenthetical">
        <!--Parent Role: CONDENSED BALANCE SHEETS (Unaudited)-->
        <link:definition>010100 - Statement - CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedStatementsOfEarningsUnaudited" id="CondensedStatementsOfEarningsUnaudited">
        <link:definition>020000 - Statement - CONDENSED STATEMENTS OF EARNINGS (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedStatementsOfComprehensiveIncomeUnaudited" id="CondensedStatementsOfComprehensiveIncomeUnaudited">
        <link:definition>030000 - Statement - CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedStatementsOfCashFlowsUnaudited" id="CondensedStatementsOfCashFlowsUnaudited">
        <link:definition>040000 - Statement - CONDENSED STATEMENTS OF CASH FLOWS (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/CondensedStatementsOfStockholdersEquityUnaudited" id="CondensedStatementsOfStockholdersEquityUnaudited">
        <link:definition>050000 - Statement - CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/BasisForPreparationOfCondensedFinancialStatements" id="BasisForPreparationOfCondensedFinancialStatements">
        <link:definition>060100 - Disclosure - BASIS FOR PREPARATION OF THE CONDENSED FINANCIAL STATEMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/AccountingStandardsAdoptions" id="AccountingStandardsAdoptions">
        <link:definition>060200 - Disclosure - ACCOUNTING STANDARDS ADOPTIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/Leases" id="Leases">
        <link:definition>060300 - Disclosure - LEASES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/Revenues" id="Revenues">
        <link:definition>060400 - Disclosure - REVENUES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/Acquisitions" id="Acquisitions">
        <link:definition>060500 - Disclosure - ACQUISITIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/Inventories" id="Inventories">
        <link:definition>060600 - Disclosure - INVENTORIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LongtermDebt" id="LongtermDebt">
        <link:definition>060700 - Disclosure - LONG-TERM DEBT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlans" id="StockAwardPlans">
        <link:definition>060800 - Disclosure - STOCK AWARD PLANS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/OtherComprehensiveIncome" id="OtherComprehensiveIncome">
        <link:definition>060900 - Disclosure - OTHER COMPREHENSIVE INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/SegmentData" id="SegmentData">
        <link:definition>061000 - Disclosure - SEGMENT DATA</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/TaxesOnIncome" id="TaxesOnIncome">
        <link:definition>061100 - Disclosure - TAXES ON INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/EarningsPerShare" id="EarningsPerShare">
        <link:definition>061200 - Disclosure - EARNINGS PER SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RetirementPlans" id="RetirementPlans">
        <link:definition>061300 - Disclosure - RETIREMENT PLANS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/Contingencies" id="Contingencies">
        <link:definition>061400 - Disclosure - CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/AccountingStandardsAdoptionsPolicies" id="AccountingStandardsAdoptionsPolicies">
        <!--Parent Role: ACCOUNTING STANDARDS ADOPTIONS-->
        <link:definition>070200 - Disclosure - ACCOUNTING STANDARDS ADOPTIONS (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LeasesTables" id="LeasesTables">
        <!--Parent Role: LEASES-->
        <link:definition>080300 - Disclosure - LEASES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RevenuesTables" id="RevenuesTables">
        <!--Parent Role: REVENUES-->
        <link:definition>080400 - Disclosure - REVENUES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/AcquisitionsTables" id="AcquisitionsTables">
        <!--Parent Role: ACQUISITIONS-->
        <link:definition>080500 - Disclosure - ACQUISITIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/InventoriesTables" id="InventoriesTables">
        <!--Parent Role: INVENTORIES-->
        <link:definition>080600 - Disclosure - INVENTORIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansTables" id="StockAwardPlansTables">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>080800 - Disclosure - STOCK AWARD PLANS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/OtherComprehensiveIncomeTables" id="OtherComprehensiveIncomeTables">
        <!--Parent Role: OTHER COMPREHENSIVE INCOME-->
        <link:definition>080900 - Disclosure - OTHER COMPREHENSIVE INCOME (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/SegmentDataTables" id="SegmentDataTables">
        <!--Parent Role: SEGMENT DATA-->
        <link:definition>081000 - Disclosure - SEGMENT DATA (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/TaxesOnIncomeTables" id="TaxesOnIncomeTables">
        <!--Parent Role: TAXES ON INCOME-->
        <link:definition>081100 - Disclosure - TAXES ON INCOME (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
        <!--Parent Role: EARNINGS PER SHARE-->
        <link:definition>081200 - Disclosure - EARNINGS PER SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RetirementPlansTables" id="RetirementPlansTables">
        <!--Parent Role: RETIREMENT PLANS-->
        <link:definition>081300 - Disclosure - RETIREMENT PLANS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/AccountingStandardsAdoptionsDetails" id="AccountingStandardsAdoptionsDetails">
        <!--Parent Role: ACCOUNTING STANDARDS ADOPTIONS-->
        <link:definition>090200 - Disclosure - ACCOUNTING STANDARDS ADOPTIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LeasesFutureMinimumLeasePaymentsUnderOperatingLeasesDetails" id="LeasesFutureMinimumLeasePaymentsUnderOperatingLeasesDetails">
        <!--Parent Role: LEASES-->
        <link:definition>090300 - Disclosure - LEASES, Future Minimum Lease Payments Under Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LeasesLeaseCostDetails" id="LeasesLeaseCostDetails">
        <!--Parent Role: LEASES-->
        <link:definition>090302 - Disclosure - LEASES, Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LeasesFutureMinimumLeasePaymentsUnderOperatingLeasesDetailsCalc2" id="LeasesFutureMinimumLeasePaymentsUnderOperatingLeasesDetailsCalc2">
        <!--Parent Role: LEASES, Future Minimum Lease Payments Under Operating Leases (Details)-->
        <link:definition>090302 - Disclosure - LEASES, Future Minimum Lease Payments Under Operating Leases (Details) Calc 2</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LeasesOtherSupplementalInformationDetails" id="LeasesOtherSupplementalInformationDetails">
        <!--Parent Role: LEASES-->
        <link:definition>090304 - Disclosure - LEASES, Other Supplemental Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RevenuesDetails" id="RevenuesDetails">
        <!--Parent Role: REVENUES-->
        <link:definition>090400 - Disclosure - REVENUES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RevenuesRemainingPerformanceObligationDetails" id="RevenuesRemainingPerformanceObligationDetails">
        <!--Parent Role: REVENUES-->
        <link:definition>090402 - Disclosure - REVENUES, Remaining Performance Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RevenuesRemainingPerformanceObligationDetailsDefault" id="RevenuesRemainingPerformanceObligationDetailsDefault">
        <link:definition>090402 - Disclosure - REVENUES, Remaining Performance Obligation (Details)Default</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/AcquisitionsDetails" id="AcquisitionsDetails">
        <!--Parent Role: ACQUISITIONS-->
        <link:definition>090500 - Disclosure - ACQUISITIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/InventoriesDetails" id="InventoriesDetails">
        <!--Parent Role: INVENTORIES-->
        <link:definition>090600 - Disclosure - INVENTORIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/LongtermDebtDetails" id="LongtermDebtDetails">
        <!--Parent Role: LONG-TERM DEBT-->
        <link:definition>090700 - Disclosure - LONG-TERM DEBT (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansCompensationCostDetails" id="StockAwardPlansCompensationCostDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090800 - Disclosure - STOCK AWARD PLANS, Compensation Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansEmployeePlanStockOptionActivityDetails" id="StockAwardPlansEmployeePlanStockOptionActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090802 - Disclosure - STOCK AWARD PLANS, Employee Plan Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansEmployeePlanOutstandingAndExercisableOptionsDetails" id="StockAwardPlansEmployeePlanOutstandingAndExercisableOptionsDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090804 - Disclosure - STOCK AWARD PLANS, Employee Plan Outstanding and Exercisable Options (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansEmployeePlanRestrictedStockAwardActivityDetails" id="StockAwardPlansEmployeePlanRestrictedStockAwardActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090806 - Disclosure - STOCK AWARD PLANS, Employee Plan Restricted Stock Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansEmployeePlanRsuActivityDetails" id="StockAwardPlansEmployeePlanRsuActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090808 - Disclosure - STOCK AWARD PLANS, Employee Plan RSU Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansDirectorPlanStockOptionActivityDetails" id="StockAwardPlansDirectorPlanStockOptionActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090810 - Disclosure - STOCK AWARD PLANS, Director Plan Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansDirectorPlanOutstandingAndExercisableOptionsDetails" id="StockAwardPlansDirectorPlanOutstandingAndExercisableOptionsDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090812 - Disclosure - STOCK AWARD PLANS, Director Plan Outstanding and Exercisable Options (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansDirectorPlanRestrictedStockAwardActivityDetails" id="StockAwardPlansDirectorPlanRestrictedStockAwardActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090814 - Disclosure - STOCK AWARD PLANS, Director Plan Restricted Stock Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/StockAwardPlansAllPlansOptionsAndRestrictedStockAwardActivityDetails" id="StockAwardPlansAllPlansOptionsAndRestrictedStockAwardActivityDetails">
        <!--Parent Role: STOCK AWARD PLANS-->
        <link:definition>090816 - Disclosure - STOCK AWARD PLANS, All Plans Options and Restricted Stock Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/OtherComprehensiveIncomeDetails" id="OtherComprehensiveIncomeDetails">
        <!--Parent Role: OTHER COMPREHENSIVE INCOME-->
        <link:definition>090900 - Disclosure - OTHER COMPREHENSIVE INCOME (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/SegmentDataDetails" id="SegmentDataDetails">
        <!--Parent Role: SEGMENT DATA-->
        <link:definition>091000 - Disclosure - SEGMENT DATA (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/TaxesOnIncomeDetails" id="TaxesOnIncomeDetails">
        <!--Parent Role: TAXES ON INCOME-->
        <link:definition>091100 - Disclosure - TAXES ON INCOME (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails">
        <!--Parent Role: EARNINGS PER SHARE-->
        <link:definition>091200 - Disclosure - EARNINGS PER SHARE (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/RetirementPlansDetails" id="RetirementPlansDetails">
        <!--Parent Role: RETIREMENT PLANS-->
        <link:definition>091300 - Disclosure - RETIREMENT PLANS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://kirbycorp.com/role/ContingenciesDetails" id="ContingenciesDetails">
        <!--Parent Role: CONTINGENCIES-->
        <link:definition>091400 - Disclosure - CONTINGENCIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://fasb.org/us-gaap/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="https://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/currency/2019-01-31" schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/exch/2019-01-31" schemaLocation="https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="https://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2004/ref" schemaLocation="http://www.xbrl.org/2004/ref-2004-08-10.xsd" />
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xs:import namespace="http://fasb.org/us-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xs:import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd" />
  <xs:import namespace="http://fasb.org/srt-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd" />
  <xs:element name="BasisForPreparationOfCondensedFinancialStatementsAbstract" id="kex_BasisForPreparationOfCondensedFinancialStatementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MarineTransportationMember" id="kex_MarineTransportationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostsOfSalesAndOperatingExpenses" id="kex_CostsOfSalesAndOperatingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="DistributionAndServicesMember" id="kex_DistributionAndServicesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CoastalTransportationMember" id="kex_CoastalTransportationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="InlandTransportationMember" id="kex_InlandTransportationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CommercialAndIndustrialMember" id="kex_CommercialAndIndustrialMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TermLoanFacilityMember" id="kex_TermLoanFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="UnpaidBalancePayableOnInitialAmountPercentage" id="kex_UnpaidBalancePayableOnInitialAmountPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="CashPaidDuringPeriodAbstract" id="kex_CashPaidDuringPeriodAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AmortizationOfMajorMaintenanceCosts" id="kex_AmortizationOfMajorMaintenanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="OperatingLeaseRightOfUseAssetAmortization" id="kex_OperatingLeaseRightOfUseAssetAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="CapitalExpendituresIncurredPaidAndNotYetPaid" id="kex_CapitalExpendituresIncurredPaidAndNotYetPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="NonCashInvestingActivityAbstract" id="kex_NonCashInvestingActivityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ReturnOfInvestmentToNoncontrollingInterests" id="kex_ReturnOfInvestmentToNoncontrollingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="AmortizationOfUnearnedCompensation" id="kex_AmortizationOfUnearnedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="UndistributedEarningsReallocatedToRestrictedShares" id="kex_UndistributedEarningsReallocatedToRestrictedShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="SharesOutstandingAbstract" id="kex_SharesOutstandingAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="WeightedAverageCommonStockIssuedAndOutstanding" id="kex_WeightedAverageCommonStockIssuedAndOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="WeightedAverageUsefulLifeUnfavorableContracts" id="kex_WeightedAverageUsefulLifeUnfavorableContracts" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfMaritimeVesselsAcquired" id="kex_NumberOfMaritimeVesselsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="PropertyPlantAndEquipmentAverageAge" id="kex_PropertyPlantAndEquipmentAverageAge" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CenacMarineServicesLLCMember" id="kex_CenacMarineServicesLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TankBargeAggregateBarrelCapacity" id="kex_TankBargeAggregateBarrelCapacity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TankBargeBarrelCapacity" id="kex_TankBargeBarrelCapacity" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TugboatsMember" id="kex_TugboatsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="InlandTankBargesMember" id="kex_InlandTankBargesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BarrelTankBargesMember" id="kex_BarrelTankBargesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="InlandTowboatsMember" id="kex_InlandTowboatsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="RestrictedStockAwardActivityAbstract" id="kex_RestrictedStockAwardActivityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DirectorPlanMember" id="kex_DirectorPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="OtherSupplementalInformationAboutOperatingLeasesAbstract" id="kex_OtherSupplementalInformationAboutOperatingLeasesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="PercentageOfCostsRelatedToServiceCostsEstimated" id="kex_PercentageOfCostsRelatedToServiceCostsEstimated" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="OperatingLeasesWeightedAverageDiscountRateAndRemainingLeaseTermTableTextBlock" id="kex_OperatingLeasesWeightedAverageDiscountRateAndRemainingLeaseTermTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EmployeePlanMember" id="kex_EmployeePlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="RestrictedStockUnitActivityAbstract" id="kex_RestrictedStockUnitActivityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="OutstandingAndExercisableStockOptionsAbstract" id="kex_OutstandingAndExercisableStockOptionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsAbstract" id="kex_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsAbstract" id="kex_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SecondPriceRangeMember" id="kex_SecondPriceRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="FirstPriceRangeMember" id="kex_FirstPriceRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TotalExercisePriceRangeMember" id="kex_TotalExercisePriceRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ThirdPriceRangeMember" id="kex_ThirdPriceRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="IncomeTaxDisclosureTable" id="kex_IncomeTaxDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="IncomeTaxDisclosureLineItems" id="kex_IncomeTaxDisclosureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ProvisionForTaxesOnIncomeAbstract" id="kex_ProvisionForTaxesOnIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="EmployeePensionPlanGrandfatheredParticipantsParticipantServicePeriodWhoIsFiftyYearsOld" id="kex_EmployeePensionPlanGrandfatheredParticipantsParticipantServicePeriodWhoIsFiftyYearsOld" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EmployeePensionPlanGrandfatheredParticipantsParticipantAge" id="kex_EmployeePensionPlanGrandfatheredParticipantsParticipantAge" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PensionPlanDefinedBenefitPlanCostIncreaseLimitPercentage" id="kex_PensionPlanDefinedBenefitPlanCostIncreaseLimitPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EmployeePensionServiceGrandfatheredParticipantsServicePeriod" id="kex_EmployeePensionServiceGrandfatheredParticipantsServicePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="HigmanMarineIncMember" id="kex_HigmanMarineIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="UnassertedClaim1Member" id="kex_UnassertedClaim1Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TermOfInstrumentUnderGuarantorObligations" id="kex_TermOfInstrumentUnderGuarantorObligations" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsDamagedInCollisionResultingInFuelOilDischarge" id="kex_NumberOfVesselsDamagedInCollisionResultingInFuelOilDischarge" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfMaritimeVessels" id="kex_NumberOfMaritimeVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="EmployeeStockAwardPlanAbstract" id="kex_EmployeeStockAwardPlanAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodFairValue" id="kex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="TaxBenefitFromRestrictedStockVesting" id="kex_TaxBenefitFromRestrictedStockVesting" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ShareBasedCompensationPlansCombinedDisclosureAbstract" id="kex_ShareBasedCompensationPlansCombinedDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="FourthPriceRangeMember" id="kex_FourthPriceRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfOtherSegmentReportingInformationBySegmentTableTextBlock" id="kex_ScheduleOfOtherSegmentReportingInformationBySegmentTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="GeneralCorporateAssets" id="kex_GeneralCorporateAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="OtherSegmentDisclosureAbstract" id="kex_OtherSegmentDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="GeneralCorporateExpenses" id="kex_GeneralCorporateExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="TaxCutsAndJobsActOtherComprehensiveIncomeLossReclassificationFromAOCIToRetainedEarningsBeforeTax" id="kex_TaxCutsAndJobsActOtherComprehensiveIncomeLossReclassificationFromAOCIToRetainedEarningsBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="TaxCutsAndJobsActOtherComprehensiveIncomeLossReclassificationFromAOCIToRetainedEarningsNetOfTax" id="kex_TaxCutsAndJobsActOtherComprehensiveIncomeLossReclassificationFromAOCIToRetainedEarningsNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
</xs:schema>
