-----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,
 BtAqQ3s47xtrb7mAb8B27FnzbIF3455i5+v66eWY7hQsqMJYjG2F6lQKmY4nNjIo
 hJvwYreNeu4KxpvwwFvL1Q==

<SEC-DOCUMENT>0001183578-06-000003.txt : 20060405
<SEC-HEADER>0001183578-06-000003.hdr.sgml : 20060405
<ACCEPTANCE-DATETIME>20060405153024
ACCESSION NUMBER:		0001183578-06-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060403
FILED AS OF DATE:		20060405
DATE AS OF CHANGE:		20060405

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			APAC CUSTOMER SERVICE INC
		CENTRAL INDEX KEY:			0000949297
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				362777140
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			0103

	BUSINESS ADDRESS:	
		STREET 1:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
		BUSINESS PHONE:		847-236-5452

	MAIL ADDRESS:	
		STREET 1:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APAC TELESERVICES INC
		DATE OF NAME CHANGE:	19950915

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APAC CORP
		DATE OF NAME CHANGE:	19950811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			COLLINS THOMAS M
		CENTRAL INDEX KEY:			0001183578

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26786
		FILM NUMBER:		06741932

	BUSINESS ADDRESS:	
		STREET 1:		6 PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
		BUSINESS PHONE:		847-374-1962

	MAIL ADDRESS:	
		STREET 1:		C/O APAC CUSTOMER SERVICES, INC.
		STREET 2:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-04-03</periodOfReport>

    <issuer>
        <issuerCik>0000949297</issuerCik>
        <issuerName>APAC CUSTOMER SERVICE INC</issuerName>
        <issuerTradingSymbol>APAC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001183578</rptOwnerCik>
            <rptOwnerName>COLLINS THOMAS M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O APAC CUSTOMER SERVICES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>SIX PARKWAY NORTH</rptOwnerStreet2>
            <rptOwnerCity>DEERFIELD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60015</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.08</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-04-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14764</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-04-03</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-04-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14764</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>273647</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock option granted pursuant to the APAC Customer Services, Inc. 2005 Incentive Stock Plan.  Subject to change in control of the Issuer, the options vest in three equal annual installments beginning on the first anniversary of the date of original grant and thereafter on each such anniversary date, and expire 10 years from the day prior to the date of original grant, unless earlier terminated pursuant to the terms of the Plan by reason of the termination of the Reporting Person's service as a director.  The options include the right of the Reporting Person to surrender shares to the Issuer in order to pay the exercise price of an option.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/Mark A. Gerard, Attorney-in-Fact/Thomas M. Collins</signatureName>
        <signatureDate>2006-04-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----