<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0502</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001389072</cik>
        <entityName>HeartWare International, Inc.</entityName>
        <issuerAddress>
            <street1>205 Newbury Street</street1>
            <street2>Suite 101</street2>
            <city>Framingham</city>
            <stateOrCountry>MA</stateOrCountry>
            <zipCode>01701</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>508-739-0950</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2008</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Douglas</firstName>
                <middleName></middleName>
                <lastName>Godshall</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName></middleName>
                <lastName>McIntyre</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <middleName>A.</middleName>
                <lastName>LaRose</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName></middleName>
                <lastName>Hathaway</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName></middleName>
                <lastName>Thomas</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Seth</firstName>
                <middleName></middleName>
                <lastName>Harrison</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bob</firstName>
                <middleName></middleName>
                <lastName>Stockman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Christine</firstName>
                <middleName></middleName>
                <lastName>Bennett</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Denis</firstName>
                <middleName></middleName>
                <lastName>Wade</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Timothy</firstName>
                <middleName></middleName>
                <lastName>Barberich</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ray</firstName>
                <middleName></middleName>
                <lastName>Larkin Jr.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>205 Newbury Street</street1>
                <street2>Suite 101</street2>
                <city>Framingham</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>01701</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Health Care</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$1 - $1,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-08-10</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Canaccord Adams Inc.</recipientName>
                <recipientCRDNumber>1020</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>99 High Street</street1>
                    <city>Boston</city>
                    <stateOrCountry>MA</stateOrCountry>
                    <zipCode>02110</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <state>CT</state>
                    <state>FL</state>
                    <state>IL</state>
                    <state>MA</state>
                    <state>MN</state>
                    <state>NY</state>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>55000000</totalOfferingAmount>
            <totalAmountSold>55000000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>30</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>1100000</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>HeartWare International, Inc.</issuerName>
                <signatureName>/s/ David McIntyre</signatureName>
                <nameOfSigner>David McIntyre</nameOfSigner>
                <signatureTitle>Chief Financial Officer, Chief Operating Officer, Secretary</signatureTitle>
                <signatureDate>2009-08-13</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
