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>0001548929</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>O'Neil Christian G.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Merrill Lynch</name>
          <address>
            <com:street1>3455 Peachtree Road NE</com:street1>
            <com:street2>STE 1000</com:street2>
            <com:city>Atlanta</com:city>
            <com:stateOrCountry>GA</com:stateOrCountry>
            <com:zipCode>30326</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>14031</noOfUnitsSold>
        <aggregateMarketValue>1729911.92</aggregateMarketValue>
        <noOfUnitsOutstanding>57900000</noOfUnitsOutstanding>
        <approxSaleDate>09/18/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>09/18/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Exercise of a Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORP</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>10698</amountOfSecuritiesAcquired>
        <paymentDate>09/18/2024</paymentDate>
        <natureOfPayment>Compensatory Payment</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>02/03/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of a Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORP</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1654</amountOfSecuritiesAcquired>
        <paymentDate>02/03/2023</paymentDate>
        <natureOfPayment>Compensatory Payment</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/24/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of Stock Awards</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORP</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>778</amountOfSecuritiesAcquired>
        <paymentDate>01/24/2023</paymentDate>
        <natureOfPayment>Compensatory Payment</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/02/2021</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of a Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORP</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>787</amountOfSecuritiesAcquired>
        <paymentDate>05/02/2021</paymentDate>
        <natureOfPayment>Compensatory Payment</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/24/2020</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of a Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORP</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>114</amountOfSecuritiesAcquired>
        <paymentDate>01/24/2020</paymentDate>
        <natureOfPayment>Compensatory Payment</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Christian O'Neil</name>
          <address>
            <com:street1>55 WAUGH DRIVE SUITE 1000</com:street1>
            <com:city>HOUSTON</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>77007</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Kirby Corp. - Common</securitiesClassTitle>
        <saleDate>08/05/2024</saleDate>
        <amountOfSecuritiesSold>2770</amountOfSecuritiesSold>
        <grossProceeds>305276.94</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Christian O'Neil</name>
          <address>
            <com:street1>55 WAUGH DRIVE SUITE 1000</com:street1>
            <com:city>HOUSTON</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>77007</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Kirby Corp. - Common</securitiesClassTitle>
        <saleDate>08/06/2024</saleDate>
        <amountOfSecuritiesSold>12730</amountOfSecuritiesSold>
        <grossProceeds>1405530.86</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>09/18/2024</noticeDate>
        <signature>Christian G. O'Neil</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 6173}]
text: 144
  0001548929
  XXXXXXXX
  LIVE
  0000056047
  KIRBY CORP
  001-07615
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  7134351000
  O'Neil Christian G.
  Officer
  Common
  Merrill Lynch
  3455 Peachtree Road NE
  STE 1000
  Atlanta
  GA
  30326
  14031
  1729911.92
  57900000
  09/18/2024
  NYSE
  Common
  09/18/2024
  Exercise of a Stock Award
  KIRBY CORP
  N
  10698
  09/18/2024
  Compensatory Payment
  Common
  02/03/2023
  Vesting of a Stock Award
  KIRBY CORP
  N
  1654
  02/03/2023
  Compensatory Payment
  Common
  01/24/2023
  Vesting of Stock Awards
  KIRBY CORP
  N
  778
  01/24/2023
  Compensatory Payment
  Common
  05/02/2021
  Vesting of a Stock Award
  KIRBY CORP
  N
  787
  05/02/2021
  Compensatory Payment
  Common
  01/24/2020
  Vesting of a Stock Award
  KIRBY CORP
  N
  114
  01/24/2020
  Compensatory Payment
  N
  Christian O'Neil
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  Kirby Corp. - Common
  08/05/2024
  2770
  305276.94
  Christian O'Neil
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  Kirby Corp. - Common
  08/06/2024
  12730
  1405530.86
  09/18/2024
  Christian G. O'Neil