8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

___________

FORM 8-K

CURRENT REPORT

Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 17, 2013

TC PipeLines, LP

(Exact name of registrant as specified in its charter)

Delaware	001-35358	52-2135448
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer  Identification No.)

717 Texas Street, Suite 2400 Houston, TX	77002-2761
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (877) 290-2772

(Former name or former address if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01  Regulation FD Disclosure.

TC PipeLines, LP (NYSE: TCP) (the "Partnership") announced today that Steve Becker, President of its general partner, will be presenting at the National Association of Publicly Traded Partnerships (NAPTP) Master Limited Partnership Investor Conference at 1:45 pm Eastern Time on Wednesday, May 22, 2013 in Stamford, Connecticut.  A link to a live webcast of the presentation and a copy of the presentation materials will be available on the Investor Center section of the Partnership’s website at www.tcpipelineslp.com prior to the presentation.  A replay of the webcast will be archived on the website shortly after the presentation.

The information in this Item 7.01 is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d)	Exhibits.
99.1	News Release, dated May 17, 2013, announcing presentation at the National Association of Publicly Traded Partnerships Master Limited Partnership Investor Conference.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TC PipeLines, LP

by:  TC PipeLines GP, Inc.,

its general partner

By: /s/Annie C. Belecki

      Annie C. Belecki

      Secretary

Date:  May 17, 2013

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EXHIBIT INDEX

Exhibit No.	Description
99.1	News Release, dated May 17, 2013, announcing presentation at the National Association of Publicly Traded Partnerships Master Limited Partnership Investor Conference.

4

EX-99.1

Exhibit 99.1

 NewsRelease

TC PipeLines, LP to Present at

NAPTP Master Limited Partnership Conference

HOUSTON, Texas – May 17, 2013 – TC PipeLines, LP (NYSE: TCP) (the Partnership) will be presenting at the National Association of Publicly Traded Partnerships (NAPTP) Master Limited Partnership Investor Conference on Wednesday, May 22, 2013, in Stamford, CT starting at 1:45 p.m. ET.  Steve Becker, president of the general partner, will present an overview of the Partnership and its business outlook.

A link to the webcast and a copy of the presentation will be available at the Partnership’s Investor Center at www.tcpipelineslp.com.

TC PipeLines, LP is a Delaware master limited partnership with interests in 5,560 miles of federally regulated U.S. interstate natural gas pipelines which serve markets across the United States and Eastern Canada. This includes significant interests in Great Lakes Gas Transmission Limited Partnership and Northern Border Pipeline Company as well as 25 percent ownership interest in each of Gas Transmission Northwest LLC, and Bison Pipeline LLC. The Partnership also wholly owns North Baja Pipeline, LLC and Tuscarora Gas Transmission Company. The Partnership is managed by its general partner, TC PipeLines GP, Inc., an indirect wholly-owned subsidiary of TransCanada Corporation (NYSE: TRP). TC PipeLines GP, Inc. and another TransCanada subsidiary also hold common units of TC PipeLines, LP. For more information about TC PipeLines, LP, visit the Partnership’s website at www.tcpipelineslp.com.

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Media Inquiries:	Grady Semmens/Shawn Howard	403.920.7859 800.608.7859
Unitholder and Analyst Inquiries:	Rhonda Amundson	877.290.2772 investor_relations@tcpipelineslp.com