<?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>0001825187</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001031308</issuerCik>
      <issuerName>BENTLEY SYSTEMS INC</issuerName>
      <secFileNumber>001-39548</secFileNumber>
      <issuerAddress>
        <com:street1>685 STOCKTON DRIVE</com:street1>
        <com:city>EXTON</com:city>
        <com:stateOrCountry>PA</com:stateOrCountry>
        <com:zipCode>19341</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6104585000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Bentley Keith A.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON CL B</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>THE CHARLES SCHWAB CORPORATION</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>150000</noOfUnitsSold>
      <aggregateMarketValue>8274000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>291843811</noOfUnitsOutstanding>
      <approxSaleDate>07/07/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON CL B</securitiesClassTitle>
      <acquiredDate>07/03/2024</acquiredDate>
      <natureOfAcquisitionTransaction>COMPENSATION SHARES</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>150000</amountOfSecuritiesAcquired>
      <paymentDate>07/03/2024</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>07/07/2025</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>03/13/2025</planAdoptionDate>
      </planAdoptionDates>
      <signature>KEITH A BENTLEY</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 2820}]
144
0001825187
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
685 STOCKTON DRIVE
EXTON
PA
19341
6104585000
Bentley Keith A.
Director
COMMON CL B
THE CHARLES SCHWAB CORPORATION
3000 Schwab Way
Westlake
TX
76262
150000
8274000.00
291843811
07/07/2025
NASDAQ
COMMON CL B
07/03/2024
COMPENSATION SHARES
ISSUER
N
150000
07/03/2024
NA
Y
07/07/2025
03/13/2025
KEITH A BENTLEY