<?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>0001214661</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 GREGORY S</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON CLASS 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>53968</noOfUnitsSold>
      <aggregateMarketValue>2241561.00</aggregateMarketValue>
      <noOfUnitsOutstanding>291565797</noOfUnitsOutstanding>
      <approxSaleDate>03/12/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON CLASS B</securitiesClassTitle>
      <acquiredDate>12/01/2023</acquiredDate>
      <natureOfAcquisitionTransaction>COMPENSATION BETWEEN: 12/1/23 TO 1/1/25</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>53968</amountOfSecuritiesAcquired>
      <paymentDate>12/01/2023</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>03/12/2025</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>12/10/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>GREGORY S BENTLEY</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 2907}]
144
0001214661
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
685 STOCKTON DRIVE
EXTON
PA
19341
6104585000
BENTLEY GREGORY S
Officer
Director
COMMON CLASS B
THE CHARLES SCHWAB CORPORATION
3000 Schwab Way
Westlake
TX
76262
53968
2241561.00
291565797
03/12/2025
NASDAQ
COMMON CLASS B
12/01/2023
COMPENSATION BETWEEN: 12/1/23 TO 1/1/25
ISSUER
N
53968
12/01/2023
NA
Y
03/12/2025
12/10/2024
GREGORY S BENTLEY