<SEC-DOCUMENT>0001209191-18-031735.txt : 20180521
<SEC-HEADER>0001209191-18-031735.hdr.sgml : 20180521
<ACCEPTANCE-DATETIME>20180521151644
ACCESSION NUMBER:		0001209191-18-031735
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180517
FILED AS OF DATE:		20180521
DATE AS OF CHANGE:		20180521

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mencini Frank C
		CENTRAL INDEX KEY:			0001661693

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31940
		FILM NUMBER:		18849345

	MAIL ADDRESS:	
		STREET 1:		21574 AWBREY PLACE
		CITY:			BROADLANDS
		STATE:			VA
		ZIP:			20148

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FNB CORP/PA/
		CENTRAL INDEX KEY:			0000037808
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				251255406
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		F.N.B. CORPORATION
		STREET 2:		ONE NORTH SHORE CENTER, 12 FEDERAL ST.
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212
		BUSINESS PHONE:		800-555-5455

	MAIL ADDRESS:	
		STREET 1:		F.N.B. CORPORATION
		STREET 2:		ONE NORTH SHORE CENTER, 12 FEDERAL ST.
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FNB CORP/FL/
		DATE OF NAME CHANGE:	20010601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FNB CORP/PA
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CITIZENS BUDGET CO
		DATE OF NAME CHANGE:	19750909
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2018-05-17</periodOfReport>

    <dateOfOriginalSubmission>2018-05-18</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000037808</issuerCik>
        <issuerName>FNB CORP/PA/</issuerName>
        <issuerTradingSymbol>FNB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001661693</rptOwnerCik>
            <rptOwnerName>Mencini Frank C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE NORTH SHORE CENTER</rptOwnerStreet1>
            <rptOwnerStreet2>12 FEDERAL STREET</rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15212</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-05-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4070</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.52</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30681.2802</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks>This grant was made as the annual grant made to all directors elected at our 2018 Annual Meeting. This grant constitutes the equity portion of each of the  elected F.N.B. Corporation director's annual compensation. The stock grant was made under the terms of the F.N.B. Corporation 2007 Incentive Compensation Plan as amended and restated in 2015 pursuant to the approval of the F.N.B Corporation shareholders at the 2015 annual shareholder meeting.</remarks>

    <ownerSignature>
        <signatureName>Frank C. Mencini</signatureName>
        <signatureDate>2018-05-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
