-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 V4s4USNBM1lu+ZptuMdCv+sNpze7uqS3H8pig/HskFMESClTjB4EH2hHccbFvnPN
 4BSZ+q7EAC73LjGF93q1bA==

<SEC-DOCUMENT>0001221127-03-000013.txt : 20031222
<SEC-HEADER>0001221127-03-000013.hdr.sgml : 20031222
<ACCEPTANCE-DATETIME>20031222135107
ACCESSION NUMBER:		0001221127-03-000013
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031218
FILED AS OF DATE:		20031222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LEPOFSKY ROBERT
		CENTRAL INDEX KEY:			0001182721

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30027
		FILM NUMBER:		031067233

	MAIL ADDRESS:	
		STREET 1:		NINE HAMPSHIRE STREET
		CITY:			MANSFIELD
		STATE:			MA
		ZIP:			02048-9171

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOLDFLOW CORP
		CENTRAL INDEX KEY:			0001103234
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				043406763
		FISCAL YEAR END:			0620

	BUSINESS ADDRESS:	
		STREET 1:		430 BOSTON POST ROAD
		CITY:			WAYLAND
		STATE:			MA
		ZIP:			01778
		BUSINESS PHONE:		508-358-5848

	MAIL ADDRESS:	
		STREET 1:		430 BOSTON POST ROAD
		CITY:			WAYLAND
		STATE:			MA
		ZIP:			01778
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2003-12-18</periodOfReport>


    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001103234</issuerCik>
        <issuerName>MOLDFLOW CORP</issuerName>
        <issuerTradingSymbol>MFLO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001182721</rptOwnerCik>
            <rptOwnerName>LEPOFSKY ROBERT</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MOLDFLOW CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>430 BOSTON POST ROAD</rptOwnerStreet2>
            <rptOwnerCity>WAYLAND</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01778</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>



    <ownerSignature>
        <signatureName>Robert J. Lepofsky</signatureName>
        <signatureDate>2003-12-22</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----