-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 T7Yhop4AEcD4o1bgziiV1MhjWMZU1ztvDjp8aL+IN6pCWd3TvtErrdBCFWnVFhyT
 csCQLQ7KIRJy2bW2A9P8Lg==

<SEC-DOCUMENT>0000932678-04-000003.txt : 20040603
<SEC-HEADER>0000932678-04-000003.hdr.sgml : 20040603
<ACCEPTANCE-DATETIME>20040603153751
ACCESSION NUMBER:		0000932678-04-000003
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040601
FILED AS OF DATE:		20040603

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MELLON FINANCIAL CORP
		CENTRAL INDEX KEY:			0000064782
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				251233834
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE MELLON BANK CTR
		STREET 2:		500 GRANT ST
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15258-0001
		BUSINESS PHONE:		4122345000

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MELLON BANK CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MELLON NATIONAL CORP
		DATE OF NAME CHANGE:	19841014

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CEJAS PAUL L
		CENTRAL INDEX KEY:			0000932678

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07410
		FILM NUMBER:		04847215

	BUSINESS ADDRESS:	
		STREET 1:		4400 BISCAYNE BLVD
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33137
		BUSINESS PHONE:		3055786000

	MAIL ADDRESS:	
		STREET 1:		200 S BISCAYNE BLVD 48TH FL
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33131
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2004-06-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000064782</issuerCik>
        <issuerName>MELLON FINANCIAL CORP</issuerName>
        <issuerTradingSymbol>MEL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000932678</rptOwnerCik>
            <rptOwnerName>CEJAS PAUL L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PLC INVESTMENTS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>420 LINCOLN ROAD, SUITE 240</rptOwnerStreet2>
            <rptOwnerCity>MIAMI BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <ownerSignature>
        <signatureName>Paul  L. Cejas</signatureName>
        <signatureDate>2004-06-03</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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