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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 L371M2A0pO+49d8tslkEidg+NnBae0Wt6GWoB8SvIIZX3TaqG7TAh6k5SO2LGyT8
 vgq1deZupOrcFbsG3/Mn0g==

<SEC-DOCUMENT>0001444399-09-000002.txt : 20090819
<SEC-HEADER>0001444399-09-000002.hdr.sgml : 20090819
<ACCEPTANCE-DATETIME>20090819194722
ACCESSION NUMBER:		0001444399-09-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090818
FILED AS OF DATE:		20090819
DATE AS OF CHANGE:		20090819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Levy Malcolm E
		CENTRAL INDEX KEY:			0001444399

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12719
		FILM NUMBER:		091025290

	MAIL ADDRESS:	
		STREET 1:		4650 NORRIS CANYON RD
		CITY:			SAN RAMON
		STATE:			CA
		ZIP:			94583

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GIGA TRONICS INC
		CENTRAL INDEX KEY:			0000719274
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		IRS NUMBER:				942656341
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0329

	BUSINESS ADDRESS:	
		STREET 1:		4650 NORRIS CANYON ROAD
		CITY:			SAN RAMONN
		STATE:			CA
		ZIP:			94583
		BUSINESS PHONE:		9253284650

	MAIL ADDRESS:	
		STREET 1:		4650 NORRIS CANYON ROAD
		CITY:			SAN RAMON
		STATE:			CA
		ZIP:			94583
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-08-18</periodOfReport>

    <issuer>
        <issuerCik>0000719274</issuerCik>
        <issuerName>GIGA TRONICS INC</issuerName>
        <issuerTradingSymbol>GIGA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001444399</rptOwnerCik>
            <rptOwnerName>Levy Malcolm E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4650 NORRIS CANYON RD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN RAMON</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94583</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Sales &amp; Marketing</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.95</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-08-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Option becomes exercisable in four equal increments of 1,875 shares beginning August 18, 2010 and will expire on August 18, 2014.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Malcolm E. Levy</signatureName>
        <signatureDate>2009-08-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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