<SEC-DOCUMENT>0001179110-17-015941.txt : 20171229
<SEC-HEADER>0001179110-17-015941.hdr.sgml : 20171229
<ACCEPTANCE-DATETIME>20171229172826
ACCESSION NUMBER:		0001179110-17-015941
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171228
FILED AS OF DATE:		20171229
DATE AS OF CHANGE:		20171229

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brooks David R
		CENTRAL INDEX KEY:			0001573461

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	814-00061
		FILM NUMBER:		171282760

	MAIL ADDRESS:	
		STREET 1:		1600 REDBUD BOULEVARD
		STREET 2:		SUITE 400
		CITY:			MCKINNEY
		STATE:			TX
		ZIP:			75069

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CAPITAL SOUTHWEST CORP
		CENTRAL INDEX KEY:			0000017313
		IRS NUMBER:				751072796
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		5400 LYNDON B. JOHNSON FREEWAY
		STREET 2:		SUITE 1300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240
		BUSINESS PHONE:		2142385700

	MAIL ADDRESS:	
		STREET 1:		5400 LYNDON B. JOHNSON FREEWAY
		STREET 2:		SUITE 1300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-12-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000017313</issuerCik>
        <issuerName>CAPITAL SOUTHWEST CORP</issuerName>
        <issuerTradingSymbol>CSWC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001573461</rptOwnerCik>
            <rptOwnerName>Brooks David R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CAPITAL SOUTHWEST CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>5400 LYNDON B. JOHNSON FWY, SUITE 1300</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75240</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-12-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.663</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $16.605 to $16.70, inclusive. The reporting person undertakes to provide to Capital Southwest Corporation, any security holder of Capital Southwest Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David R. Brooks</signatureName>
        <signatureDate>2017-12-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
