<SEC-DOCUMENT>0001075607-18-000028-index.html : 20180802
<SEC-HEADER>0001075607-18-000028.hdr.sgml : 20180802
<ACCEPTANCE-DATETIME>20180802162241
ACCESSION NUMBER:		0001075607-18-000028
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20180802
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180802
DATE AS OF CHANGE:		20180802

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35358
		FILM NUMBER:		18988679

	BUSINESS ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
		BUSINESS PHONE:		(877) 290-2772

	MAIL ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>form8k20180802.htm
<DESCRIPTION>FORM 8-K - TC PIPELINES, LP - AUGUST 2, 2018
<TEXT>
Document 1 - file: form8k20180802.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991-20180802.htm
<DESCRIPTION>EXHIBIT 99.1 - TC PIPELINES, LP - AUGUST 2, 2018
<TEXT>
Document 2 - file: ex991-20180802.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>lplogo.jpg
<TEXT>
Document 3 - file: lplogo.jpg

</DOCUMENT>
</SEC-DOCUMENT>