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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 MxUzeQcgRgZly3YT25D67hPZEoBBQX/uw73CyRM/H8irnlpaJbbuk1O8VlSfbDbT
 kvggFZooo9efHIutGCj1HQ==

<SEC-DOCUMENT>0001206483-06-000208.txt : 20060802
<SEC-HEADER>0001206483-06-000208.hdr.sgml : 20060802
<ACCEPTANCE-DATETIME>20060802191942
ACCESSION NUMBER:		0001206483-06-000208
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060801
FILED AS OF DATE:		20060802
DATE AS OF CHANGE:		20060802

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTHWEST GAS CORP
		CENTRAL INDEX KEY:			0000092416
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
		IRS NUMBER:				880085720
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5241 SPRING MOUNTAIN RD
		STREET 2:		PO BOX 98510
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89193-8510
		BUSINESS PHONE:		7028767237

	MAIL ADDRESS:	
		STREET 1:		5241 SPRING MOUNTAIN RD
		STREET 2:		PO BOX 98510
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89193

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KENNY KENNETH J
		CENTRAL INDEX KEY:			0001234538

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07850
		FILM NUMBER:		06999477

	MAIL ADDRESS:	
		STREET 1:		PO BOX 98510
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89193-8510
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ken514.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-08-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000092416</issuerCik>
        <issuerName>SOUTHWEST GAS CORP</issuerName>
        <issuerTradingSymbol>SWX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001234538</rptOwnerCik>
            <rptOwnerName>KENNY KENNETH J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5241 SPRING MOUNTAIN ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>891500002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President/Treasurer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy) 2006</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>33.07</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>33.07</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-08-01</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-07-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3600.00</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3600.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Options vest in 3 annual installments of 40% in 2007; 30% in 2008; and 30% in 2009.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: Kathy M. Bailey, POA</signatureName>
        <signatureDate>2006-08-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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