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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 LKKI6Y8rEu+fi2NyhcdL9wkgNX55QIgprCbO2LEbVgz/Z5ouUYW7V+MwDS666E/+
 1CK0fcFwBX12BBPWbW2xWQ==

<SEC-DOCUMENT>0001140361-08-010880.txt : 20080501
<SEC-HEADER>0001140361-08-010880.hdr.sgml : 20080501
<ACCEPTANCE-DATETIME>20080501175057
ACCESSION NUMBER:		0001140361-08-010880
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080423
FILED AS OF DATE:		20080501
DATE AS OF CHANGE:		20080501

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PDI INC
		CENTRAL INDEX KEY:			0001054102
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				222919486
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		SADDLE RIVER EXECUTIVE CENTRE
		STREET 2:		1 ROUTE 17 SOUTH
		CITY:			SADDLE RIVER
		STATE:			NJ
		ZIP:			07458
		BUSINESS PHONE:		2012588450

	MAIL ADDRESS:	
		STREET 1:		SADDLE RIVER EXECUTIVE CENTRE
		STREET 2:		1 ROUTE 17 SOUTH
		CITY:			SADDLE RIVER
		STATE:			NJ
		ZIP:			07458

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PROFESSIONAL DETAILING INC
		DATE OF NAME CHANGE:	19980129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Belle Gerald P.
		CENTRAL INDEX KEY:			0001416041

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-46321
		FILM NUMBER:		08795934

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		801-584-3672

	MAIL ADDRESS:	
		STREET 1:		320 WAKARA WAY
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84108
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2008-04-23</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001054102</issuerCik>
        <issuerName>PDI INC</issuerName>
        <issuerTradingSymbol>PDII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001416041</rptOwnerCik>
            <rptOwnerName>Belle Gerald P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PDI, INC. SADDLE RIVER EXEC. CENTRE</rptOwnerStreet1>
            <rptOwnerStreet2>1 ROUTE 17 SOUTH</rptOwnerStreet2>
            <rptOwnerCity>SADDLE RIVER</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07458</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7001</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">On April 23, 2008, upon his appointment to PDI's Board of Directors, Mr. Belle was granted 7,001 restricted shares of common stock, which vest one-third over each of the next three years on the anniversary of the grant date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Gerald P. Belle</signatureName>
        <signatureDate>2008-05-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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