<SEC-DOCUMENT>0000899243-20-030999.txt : 20201113
<SEC-HEADER>0000899243-20-030999.hdr.sgml : 20201113
<ACCEPTANCE-DATETIME>20201113163010
ACCESSION NUMBER:		0000899243-20-030999
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201111
FILED AS OF DATE:		20201113
DATE AS OF CHANGE:		20201113

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SPT Invest Management Sarl
		CENTRAL INDEX KEY:			0001831949
		STATE OF INCORPORATION:			N4
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39548
		FILM NUMBER:		201311906

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIEMENS CORPORATION
		STREET 2:		21 RUE EDMOND REUTER
		CITY:			CONTERN
		STATE:			N4
		ZIP:			5326
		BUSINESS PHONE:		(732) 589-8142

	MAIL ADDRESS:	
		STREET 1:		C/O SIEMENS CORPORATION
		STREET 2:		21 RUE EDMOND REUTER
		CITY:			CONTERN
		STATE:			N4
		ZIP:			5326

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BENTLEY SYSTEMS INC
		CENTRAL INDEX KEY:			0001031308
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				953936623
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		690 PENNSYLVANIA DR
		CITY:			EXTON
		STATE:			PA
		ZIP:			19341
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-11-11</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001031308</issuerCik>
        <issuerName>BENTLEY SYSTEMS INC</issuerName>
        <issuerTradingSymbol>BSY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001831949</rptOwnerCik>
            <rptOwnerName>SPT Invest Management Sarl</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>21 RUE EDMOND REUTER</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>5326 CONTERN</rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class B Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35569645</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares received in a transfer from Siemens International Holding B.V., an affiliate of Siemens AG.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>SPT Invest Management Sarl, By: /s/ Stockle Ramon, Name: Stockle Ramon, Title: Director</signatureName>
        <signatureDate>2020-11-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Klein Tobias, Name: Klein Tobias, Title: Director</signatureName>
        <signatureDate>2020-11-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
