-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EP7/EAUgI/1Biaap/eqyYeJ9g/29uHWaQnhhcVLzVP7gMxXTbC+0J2aC65Ldj7Uj
 U1MAjhDUUD3BsYAGFoNERQ==

<SEC-DOCUMENT>0001161697-11-000198.txt : 20110302
<SEC-HEADER>0001161697-11-000198.hdr.sgml : 20110302
<ACCEPTANCE-DATETIME>20110302170509
ACCESSION NUMBER:		0001161697-11-000198
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110228
FILED AS OF DATE:		20110302
DATE AS OF CHANGE:		20110302

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESTMOUNTAIN INDEX ADVISOR INC
		CENTRAL INDEX KEY:			0001421601
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTORS, NEC [6799]
		IRS NUMBER:				261315498
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		123 NORTH COLLEGE AVE, STE 200
		CITY:			FORT COLLINS
		STATE:			CO
		ZIP:			80524
		BUSINESS PHONE:		970-530-0325

	MAIL ADDRESS:	
		STREET 1:		123 NORTH COLLEGE AVE, STE 200
		CITY:			FORT COLLINS
		STATE:			CO
		ZIP:			80524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCOTT MARK E
		CENTRAL INDEX KEY:			0001197104

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-53028
		FILM NUMBER:		11657162

	MAIL ADDRESS:	
		STREET 1:		C/O IA GLOBAL, INC.
		STREET 2:		101 CALIFORNIA STREET, SUITE 2450
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form_3.xml
<DESCRIPTION>FORM 3 FOR 02-28-2011
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2011-02-28</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001421601</issuerCik>
        <issuerName>WESTMOUNTAIN INDEX ADVISOR INC</issuerName>
        <issuerTradingSymbol>WMNT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001197104</rptOwnerCik>
            <rptOwnerName>SCOTT MARK E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WESTMOUNTAIN INDEX ADVISOR, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2186 S. HOLLY ST., SUITE 104</rptOwnerStreet2>
            <rptOwnerCity>DENVER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80222</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares issued at $.50 per share relating to a Consulting Agreement which closed 02-28-2011.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Mark Scott</signatureName>
        <signatureDate>2011-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----