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    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001977926</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>690 PENNSYLVANIA DR</com:street1>
        <com:city>EXTON</com:city>
        <com:stateOrCountry>PA</com:stateOrCountry>
        <com:zipCode>19341</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6104585000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Keith A Bentley 2012 Gift Trust FBO William Bentley</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Member of immediate family of any of the foregoing</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Bentley Systems, Inc., Class B</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</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>20000</noOfUnitsSold>
      <aggregateMarketValue>917200.00</aggregateMarketValue>
      <noOfUnitsOutstanding>281770044</noOfUnitsOutstanding>
      <approxSaleDate>05/17/2023</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <acquiredDate>02/23/2017</acquiredDate>
      <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Bentley</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>Y</isGiftTransaction>
      <donarAcquiredDate>08/14/1987</donarAcquiredDate>
      <amountOfSecuritiesAcquired>20000</amountOfSecuritiesAcquired>
      <paymentDate>02/23/2017</paymentDate>
      <natureOfPayment>founders shares</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO Robert</name>
        <address>
          <com:street1>C/O 690 Stockston Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>16013</amountOfSecuritiesSold>
      <grossProceeds>725931.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 GST FBO Robert</name>
        <address>
          <com:street1>C/O 690 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 GST FBO William</name>
        <address>
          <com:street1>C/O 690 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO Sarah</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO Sarah</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems,Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2007 Gift FBO Sarah</name>
        <address>
          <com:street1>C/O 690 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>34313</amountOfSecuritiesSold>
      <grossProceeds>1555544.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO David</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>30000</amountOfSecuritiesSold>
      <grossProceeds>1354761.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 GST FBO David</name>
        <address>
          <com:street1>C/O 690 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>22876</amountOfSecuritiesSold>
      <grossProceeds>1037058.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2007 Gift FBO David</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19431</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO Jennifer</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>91500</amountOfSecuritiesSold>
      <grossProceeds>4148060.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 GST FBO Charlene</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>11442</amountOfSecuritiesSold>
      <grossProceeds>518707.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>KAB 2012 Gift FBO Charlene</name>
        <address>
          <com:street1>C/O Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19431</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Bentley Systems, Inc. Class B</securitiesClassTitle>
      <saleDate>05/10/2023</saleDate>
      <amountOfSecuritiesSold>137250</amountOfSecuritiesSold>
      <grossProceeds>6222092.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Table II - past 3 months sales - 5/10/23-5/12/23</remarks>
    <noticeSignature>
      <noticeDate>05/17/2023</noticeDate>
      <signature>Corinne Bentley</signature>
    </noticeSignature>
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144
0001977926
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
690 PENNSYLVANIA DR
EXTON
PA
19341
6104585000
Keith A Bentley 2012 Gift Trust FBO William Bentley
Member of immediate family of any of the foregoing
Bentley Systems, Inc., Class B
Charles Schwab & Co., Inc.
3000 Schwab Way
Westlake
TX
76262
20000
917200.00
281770044
05/17/2023
Nasdaq
Bentley Systems, Inc. Class B
02/23/2017
Gift
Keith Bentley
Y
08/14/1987
20000
02/23/2017
founders shares
N
KAB 2012 Gift FBO Robert
C/O 690 Stockston Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
16013
725931.00
KAB 2012 GST FBO Robert
C/O 690 Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
11442
518707.00
KAB 2012 GST FBO William
C/O 690 Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
11442
518707.00
KAB 2012 Gift FBO Sarah
C/O Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
11442
518707.00
KAB 2012 Gift FBO Sarah
C/O Stockton Drive
Exton
PA
19341
Bentley Systems,Inc. Class B
05/10/2023
11442
518707.00
KAB 2007 Gift FBO Sarah
C/O 690 Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
34313
1555544.00
KAB 2012 Gift FBO David
C/O Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
30000
1354761.00
KAB 2012 GST FBO David
C/O 690 Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
22876
1037058.00
KAB 2007 Gift FBO David
C/O Stockton Drive
Exton
PA
19431
Bentley Systems, Inc. Class B
05/10/2023
11442
518707.00
KAB 2012 Gift FBO Jennifer
C/O Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
91500
4148060.00
KAB 2012 GST FBO Charlene
C/O Stockton Drive
Exton
PA
19341
Bentley Systems, Inc. Class B
05/10/2023
11442
518707.00
KAB 2012 Gift FBO Charlene
C/O Stockton Drive
Exton
PA
19431
Bentley Systems, Inc. Class B
05/10/2023
137250
6222092.00
Table II - past 3 months sales - 5/10/23-5/12/23
05/17/2023
Corinne Bentley