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>0001094176</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000874716</issuerCik>
        <issuerName>IDEXX LABORATORIES INC /DE</issuerName>
        <secFileNumber>000-19271</secFileNumber>
        <issuerAddress>
          <com:street1>ONE IDEXX DRIVE</com:street1>
          <com:city>WESTBROOK</com:city>
          <com:stateOrCountry>ME</com:stateOrCountry>
          <com:zipCode>04092-2041</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>2075560300</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>SZOSTAK M ANNE</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Goldman Sachs &amp; Co LLC</name>
          <address>
            <com:street1>200 West Street</com:street1>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10282</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>1260</noOfUnitsSold>
        <aggregateMarketValue>651621.00</aggregateMarketValue>
        <noOfUnitsOutstanding>80421917</noOfUnitsOutstanding>
        <approxSaleDate>05/21/2025</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesInformation>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Morgan Stanley Smith Barney LLC Executive Services</name>
          <address>
            <com:street1>1 New York Plaza</com:street1>
            <com:street2>8th Floor</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10004</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>1046</noOfUnitsSold>
        <aggregateMarketValue>540949.00</aggregateMarketValue>
        <noOfUnitsOutstanding>80421917</noOfUnitsOutstanding>
        <approxSaleDate>05/21/2025</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>12/02/2022</acquiredDate>
        <natureOfAcquisitionTransaction>director stock option exercise</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1260</amountOfSecuritiesAcquired>
        <paymentDate>12/02/2022</paymentDate>
        <natureOfPayment>cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/21/2025</acquiredDate>
        <natureOfAcquisitionTransaction>director stock option exercise</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1046</amountOfSecuritiesAcquired>
        <paymentDate>05/21/2025</paymentDate>
        <natureOfPayment>cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>05/21/2025</noticeDate>
        <signature>/s/ M. Anne Szostak</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4075}]
text: 144
  0001094176
  XXXXXXXX
  LIVE
  0000874716
  IDEXX LABORATORIES INC /DE
  000-19271
  ONE IDEXX DRIVE
  WESTBROOK
  ME
  04092-2041
  2075560300
  SZOSTAK M ANNE
  Director
  Common Stock
  Goldman Sachs & Co LLC
  200 West Street
  New York
  NY
  10282
  1260
  651621.00
  80421917
  05/21/2025
  Nasdaq
  Common Stock
  Morgan Stanley Smith Barney LLC Executive Services
  1 New York Plaza
  8th Floor
  New York
  NY
  10004
  1046
  540949.00
  80421917
  05/21/2025
  Nasdaq
  Common
  12/02/2022
  director stock option exercise
  Issuer
  N
  1260
  12/02/2022
  cash
  Common
  05/21/2025
  director stock option exercise
  Issuer
  N
  1046
  05/21/2025
  cash
  Y
  05/21/2025
  /s/ M. Anne Szostak