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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PsshfOtDRNHtWi1G+uWC6Amn+Zm+YAhmKnlWjEot7vBeOeW4EV1rCwZXntWKod/t
 A5+6+58VZ4F7IUTjGC0hvA==

<SEC-DOCUMENT>9999999995-08-003791.txt : 20081229
<SEC-HEADER>9999999995-08-003791.hdr.sgml : 20081225
<ACCEPTANCE-DATETIME>20081226001511
ACCESSION NUMBER:		9999999995-08-003791
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20081224
DATE AS OF CHANGE:		20081226
EFFECTIVENESS DATE:		20081224

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TC PIPELINES LP
		CENTRAL INDEX KEY:			0001075607
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				522135448
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-156114
		FILM NUMBER:		081270876

	BUSINESS ADDRESS:	
		STREET 1:		13710 FNB PARKWAY
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68154-5200
		BUSINESS PHONE:		8772902772

	MAIL ADDRESS:	
		STREET 1:		13710 FNB PARKWAY
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68154-5200
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2008-12-24</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>12:00:00</finalEffectivenessDispTime>
        <form>S-3</form>
        <filer>
            <cik>0001075607</cik>
            <entityName>TC PIPELINES LP</entityName>
            <fileNumber>333-156114</fileNumber>
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</TEXT>
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