content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001483620</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000056047</issuerCik>
        <issuerName>KIRBY CORP</issuerName>
        <secFileNumber>001-07615</secFileNumber>
        <issuerAddress>
          <com:street1>55 WAUGH DRIVE SUITE 1000</com:street1>
          <com:city>HOUSTON</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77007</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>7134351000</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Grzebinski David W</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>5000</noOfUnitsSold>
        <aggregateMarketValue>402700.00</aggregateMarketValue>
        <noOfUnitsOutstanding>59500000</noOfUnitsOutstanding>
        <approxSaleDate>10/03/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/24/2018</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2576</amountOfSecuritiesAcquired>
        <paymentDate>01/24/2018</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>02/03/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2424</amountOfSecuritiesAcquired>
        <paymentDate>02/03/2023</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>David W. Grzebinski</name>
          <address>
            <com:street1>55 Waugh Drive</com:street1>
            <com:street2>Suite 1000</com:street2>
            <com:city>Houston</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>77007</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>07/03/2023</saleDate>
        <amountOfSecuritiesSold>4000</amountOfSecuritiesSold>
        <grossProceeds>306760.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>David W. Grzebinski</name>
          <address>
            <com:street1>55 Waugh Drive</com:street1>
            <com:street2>Suite 1000</com:street2>
            <com:city>Houston</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>77007</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>09/01/2023</saleDate>
        <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
        <grossProceeds>417800.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>10/03/2023</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>02/17/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David W. Grzebinski</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001483620
  XXXXXXXX
  LIVE
  0000056047
  KIRBY CORP
  001-07615
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  7134351000
  Grzebinski David W
  Officer
  Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  5000
  402700.00
  59500000
  10/03/2023
  NYSE
  Common
  01/24/2018
  Restricted Stock Vesting
  Issuer
  N
  2576
  01/24/2018
  Compensation
  Common
  02/03/2023
  Restricted Stock Vesting
  Issuer
  N
  2424
  02/03/2023
  Compensation
  N
  David W. Grzebinski
  55 Waugh Drive
  Suite 1000
  Houston
  TX
  77007
  Common
  07/03/2023
  4000
  306760.00
  David W. Grzebinski
  55 Waugh Drive
  Suite 1000
  Houston
  TX
  77007
  Common
  09/01/2023
  5000
  417800.00
  10/03/2023
  02/17/2023
  /s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David W. Grzebinski