-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 QoQPz58NuLmv3YutE3VYWk0ozcScLjerTrNxa6Bj11av9PmhYU84gul3WXl1YHqS
 0EeqDYI3bZgxZJeGj455xg==

<SEC-DOCUMENT>0001253225-08-000003.txt : 20080620
<SEC-HEADER>0001253225-08-000003.hdr.sgml : 20080620
<ACCEPTANCE-DATETIME>20080620155931
ACCESSION NUMBER:		0001253225-08-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080620
FILED AS OF DATE:		20080620
DATE AS OF CHANGE:		20080620

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST NATIONAL CORP /VA/
		CENTRAL INDEX KEY:			0000719402
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				541232965
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		112 WEST KING STREET
		CITY:			STRASBURG
		STATE:			VA
		ZIP:			22657
		BUSINESS PHONE:		5404659121

	MAIL ADDRESS:	
		STREET 1:		112 WEST KING STREET
		CITY:			STRASBURG
		STATE:			VA
		ZIP:			22657

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BEVERLEY JR MARSHALL J
		CENTRAL INDEX KEY:			0001313187

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23976
		FILM NUMBER:		08910164

	BUSINESS ADDRESS:	
		STREET 1:		112 W KING STREET
		CITY:			STRASBURG
		STATE:			VA
		ZIP:			22657
		BUSINESS PHONE:		5404659121

	MAIL ADDRESS:	
		STREET 1:		112 W KING STREET
		CITY:			STRASBURG
		STATE:			VA
		ZIP:			22657

	FORMER NAME:	
		FORMER CONFORMED NAME:	MARSHALL J BEVERLEY JR
		DATE OF NAME CHANGE:	20041230
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-06-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000719402</issuerCik>
        <issuerName>FIRST NATIONAL CORP /VA/</issuerName>
        <issuerTradingSymbol>FXNC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001313187</rptOwnerCik>
            <rptOwnerName>BEVERLEY JR MARSHALL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>112 W KING STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>STRASBURG</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22657</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP/Sr. Trust Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-06-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>125</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>20.9</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6461</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>M. Shane Bell by Power of Attorney</signatureName>
        <signatureDate>2008-06-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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