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      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001662899</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>MILLER SCOTT P</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>MERRILL LYNCH</name>
          <address>
            <com:street1>3455 PEACHTREE RD NE</com:street1>
            <com:street2>SUITE 1000</com:street2>
            <com:city>ATLANTA</com:city>
            <com:stateOrCountry>GA</com:stateOrCountry>
            <com:zipCode>30326</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>487</noOfUnitsSold>
        <aggregateMarketValue>48592.86</aggregateMarketValue>
        <noOfUnitsOutstanding>58522000</noOfUnitsOutstanding>
        <approxSaleDate>04/11/2024</approxSaleDate>
        <securitiesExchangeName>NEW YORK</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>04/08/2024</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>KIRBY CORPORATION</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>487</amountOfSecuritiesAcquired>
        <paymentDate>04/08/2024</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>SCOTT MILLER</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>COMMON</securitiesClassTitle>
        <saleDate>01/29/2024</saleDate>
        <amountOfSecuritiesSold>1828</amountOfSecuritiesSold>
        <grossProceeds>145508.80</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>SCOTT MILLER</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>COMMON</securitiesClassTitle>
        <saleDate>02/07/2024</saleDate>
        <amountOfSecuritiesSold>2461</amountOfSecuritiesSold>
        <grossProceeds>206797.83</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
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          <name>SCOTT MILLER</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>COMMON</securitiesClassTitle>
        <saleDate>03/26/2024</saleDate>
        <amountOfSecuritiesSold>6705</amountOfSecuritiesSold>
        <grossProceeds>637288.71</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>04/11/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>08/02/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>SCOTT MILLER</signature>
      </noticeSignature>
    </formData>
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text: 144
  0001662899
  XXXXXXXX
  LIVE
  0000056047
  KIRBY CORP
  001-07615
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  7134351000
  MILLER SCOTT P
  Officer
  COMMON
  MERRILL LYNCH
  3455 PEACHTREE RD NE
  SUITE 1000
  ATLANTA
  GA
  30326
  487
  48592.86
  58522000
  04/11/2024
  NEW YORK
  COMMON
  04/08/2024
  RESTRICTED STOCK UNIT VEST
  KIRBY CORPORATION
  N
  487
  04/08/2024
  COMPENSATORY PAYMENT
  N
  SCOTT MILLER
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  COMMON
  01/29/2024
  1828
  145508.80
  SCOTT MILLER
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  COMMON
  02/07/2024
  2461
  206797.83
  SCOTT MILLER
  55 WAUGH DRIVE SUITE 1000
  HOUSTON
  TX
  77007
  COMMON
  03/26/2024
  6705
  637288.71
  04/11/2024
  08/02/2023
  SCOTT MILLER