<SEC-DOCUMENT>0001276854-23-000001.txt : 20230316
<SEC-HEADER>0001276854-23-000001.hdr.sgml : 20230316
<ACCEPTANCE-DATETIME>20230316130829
ACCESSION NUMBER:		0001276854-23-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230315
FILED AS OF DATE:		20230316
DATE AS OF CHANGE:		20230316

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BALL LAWRENCE J
		CENTRAL INDEX KEY:			0001276854

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15204
		FILM NUMBER:		23738126

	MAIL ADDRESS:	
		STREET 1:		1811 MOUNTAINSIDE DRIVE
		CITY:			BLACKSBURG
		STATE:			VA
		ZIP:			24060

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL BANKSHARES INC
		CENTRAL INDEX KEY:			0000796534
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				541375874
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		101 HUBBARD STREET
		STREET 2:		PO BOX 90002
		CITY:			BLACKSBURG
		STATE:			VA
		ZIP:			24060
		BUSINESS PHONE:		540-951-6300

	MAIL ADDRESS:	
		STREET 1:		101 HUBBARD STREET
		STREET 2:		PO BOX 90002
		CITY:			BLACKSBURG
		STATE:			VA
		ZIP:			24060
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-03-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000796534</issuerCik>
        <issuerName>NATIONAL BANKSHARES INC</issuerName>
        <issuerTradingSymbol>NKSH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001276854</rptOwnerCik>
            <rptOwnerName>BALL LAWRENCE J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1811 MOUNTAINSIDE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLACKSBURG</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>24060</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>2023-03-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>36.5</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Lawrence J. Ball</signatureName>
        <signatureDate>2023-03-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
