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

    <schemaVersion>X0101</schemaVersion>

<documentType>4</documentType>

    <periodOfReport>2003-05-12</periodOfReport>

<issuer>        <issuerCik>0000790816</issuerCik>
        <issuerName>BRANDYWINE REALTY TRUST</issuerName>
<issuerTradingSymbol>BDN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192899</rptOwnerCik>
            <rptOwnerName>ALOIAN D PIKE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
<reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>


        </reportingOwnerRelationship>
    </reportingOwner>


    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Shares of Beneficial Interest</value>

        </securityTitle>
        <transactionDate>
            <value>2003-05-09</value>

        </transactionDate>
        <deemedExecutionDate>
            <value>2003-05-09</value>

        </deemedExecutionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>A</transactionCode>

            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>1058</value>

            </transactionShares>
            <transactionValue>
                <value>23.65</value>

            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>

            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>4249</value>

            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>

            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>


    <footnotes>
    </footnotes>

    <ownerSignature>
        <signatureName>D. Pike Aloian</signatureName>
        <signatureDate>2003-05-12</signatureDate>
    </ownerSignature>

</ownershipDocument>

