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): October 31, 2014 (October 31, 2014)

Tallgrass Energy Partners, LP

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (913) 928-6060

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:

Equity Distribution Agreement

On October 31, 2014, Tallgrass Energy Partners, LP (“Partnership”) entered into an Equity Distribution Agreement (“Distribution Agreement”) by and among the Partnership and Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Citigroup Global Markets Inc. (each, a “Manager” and collectively, the “Managers”). Pursuant to the terms of the Distribution Agreement, the Partnership may sell from time to time through the Managers, as the Partnership’s sales agents, the Partnership’s common units representing limited partner interests having an aggregate offering price of up to $200,000,000 (the “Units”). Under the terms of the Distribution Agreement, the Partnership may also sell Units from time to time to any Manager as principal for its own account at a price to be agreed upon at the time of sale. Any sale of Units to a Manager as principal would be pursuant to the terms of a separate terms agreement between the Partnership and such Manager. Sales of the Units, if any, will be made by means of ordinary brokers’ transactions, to or through a market maker or directly on or through an electronic communication network, a “dark pool” or any similar market venue, or as otherwise agreed by the Partnership and one or more of the Managers. The Units will be issued pursuant to the Partnership’s shelf registration statement on Form S-3 (Registration No. 333-196454).

All of the Managers and their respective affiliates have provided, and may in the future provide, various financial advisory, sales and trading, commercial and investment banking and other financial and non-financial activities and services to the Partnership and its affiliates, for which they received or will receive customary fees and expenses. In addition, affiliates of all of the Managers are lenders under the Partnership’s revolving credit facility.

The summary of the Distribution Agreement in this report does not purport to be complete and is qualified by reference to the full text of the Distribution Agreement, a copy of which is filed as Exhibit 1.1 to this Current Report on Form 8-K, and is incorporated herein by reference.

Legal opinions relating to the Units are included as Exhibits 5.1 and 8.1 to this Current Report.

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.

Date: October 31, 2014

INDEX TO EXHIBITS