-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Q6KoEmYYi3/b61HwBOx3rk+JGjLlnsYLyk0bvUv1GwUf42ps7i1p6bYZGtYnU2ef
 CxpO9p8/ur8xjI7egNo7SA==

<SEC-DOCUMENT>0001019687-07-004395.txt : 20071219
<SEC-HEADER>0001019687-07-004395.hdr.sgml : 20071219
<ACCEPTANCE-DATETIME>20071219190721
ACCESSION NUMBER:		0001019687-07-004395
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071214
FILED AS OF DATE:		20071219
DATE AS OF CHANGE:		20071219

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SPIRE CORP
		CENTRAL INDEX KEY:			0000731657
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				042457335
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE PATRIOTS PARK
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730-2396
		BUSINESS PHONE:		6172756000

	MAIL ADDRESS:	
		STREET 2:		ONE PATRIOTS PARK
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730-2396

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gelbaum Monica Chavez
		CENTRAL INDEX KEY:			0001403417

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12742
		FILM NUMBER:		071317491

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		760-942-0157

	MAIL ADDRESS:	
		STREET 1:		2309 SANTIAGO DRIVE
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gelbaum David
		CENTRAL INDEX KEY:			0001391795

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12742
		FILM NUMBER:		071317492

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		949-646-3784

	MAIL ADDRESS:	
		STREET 1:		2309 SANTIAGO DRIVE
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Quercus Trust
		CENTRAL INDEX KEY:			0001403463
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12742
		FILM NUMBER:		071317493

	BUSINESS ADDRESS:	
		STREET 1:		2309 SANTIAGO DRIVE
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
		BUSINESS PHONE:		310-201-7481

	MAIL ADDRESS:	
		STREET 1:		2309 SANTIAGO DRIVE
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-12-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000731657</issuerCik>
        <issuerName>SPIRE CORP</issuerName>
        <issuerTradingSymbol>SPIR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001403463</rptOwnerCik>
            <rptOwnerName>Quercus Trust</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109 - PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001391795</rptOwnerCik>
            <rptOwnerName>Gelbaum David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109 - PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Co-Trustee</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001403417</rptOwnerCik>
            <rptOwnerName>Gelbaum Monica Chavez</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109 - PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Co-Trustee</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>837043</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ David Gelbaum, Co-Trustee, The Quercus Trust</signatureName>
        <signatureDate>2007-12-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ David Gelbaum, as attorney-in-fact for Monica Chavez Gelbaum, Co-Trustee, The Quercus Trust</signatureName>
        <signatureDate>2007-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----