-----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,
 ED9JVCIv8TQLCdWPBhrO6Lq4Tyh8B8F2Pyl01AcEJzKsvFrLz/IzPWq3CO9sb/qn
 O1ry+s7aqmJYwP9VLPjzNA==

<SEC-DOCUMENT>0000713671-03-000024.txt : 20030707
<SEC-HEADER>0000713671-03-000024.hdr.sgml : 20030704
<ACCEPTANCE-DATETIME>20030707152923
ACCESSION NUMBER:		0000713671-03-000024
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030630
FILED AS OF DATE:		20030707

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TETI LOUIS N
		CENTRAL INDEX KEY:			0001208604

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-16667
		FILM NUMBER:		03776956

	BUSINESS ADDRESS:	
		STREET 1:		C/O DNB FINANCIAL CORP
		STREET 2:		4 BRANDYWINE AVENUE
		CITY:			DOWNINGTOWN
		STATE:			PA
		ZIP:			19335
		BUSINESS PHONE:		6102691040

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DNB FINANCIAL CORP /PA/
		CENTRAL INDEX KEY:			0000713671
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				232222567
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4 BRANDYWINE AVE
		CITY:			DOWNINGTOWN
		STATE:			PA
		ZIP:			19335
		BUSINESS PHONE:		6102691040

	MAIL ADDRESS:	
		STREET 1:		4 BRANDYWINE AVENUE
		CITY:			DOWNINGTOWN
		STATE:			PA
		ZIP:			19335
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>4/A</documentType>

    <periodOfReport>2003-06-30</periodOfReport>

    <dateOfOriginalSubmission>2003-07-03</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000713671</issuerCik>
        <issuerName>DNB FINANCIAL CORP /PA/</issuerName>
        <issuerTradingSymbol>dnbf.ob</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001208604</rptOwnerCik>
            <rptOwnerName>TETI LOUIS N</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>

    <derivativeSecurity>
        <securityTitle>
            <value>Stock Option to Purchase</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>23.82</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>2003-06-30</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>A</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>1475</value>
            </transactionShares>
            <transactionValue>
                <value>23.82</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>2003-12-31</value>
        </exerciseDate>
        <expirationDate>
            <value>2013-06-30</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>DNB Financial Corp Common Stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>1475</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>13284</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>


    <ownerSignature>
        <signatureName>/s/ Bruce E. Moroney for Louis N. Teti</signatureName>
        <signatureDate>2003-07-07</signatureDate>
    </ownerSignature>

</ownershipDocument>

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