|   | (Date of report)                  | March 3, 2011 |
|--------|-----------------------------------|---------------|
|   | (Date of earliest event reported) | March 2, 2011 |

| Delaware                     |   | 1-12202      |   | 93-1120873          |
|------------------------------|--------|--------------|--------|---------------------|
| (State or other jurisdiction |   | (Commission  |   | (IRS Employer       |
| of incorporation)            |   | File Number) |   | Identification No.) |

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| Item 7.01 |   | Regulation FD Disclosure                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|-----------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      |   |  On March 2, 2011, we announced we will present at the Barclays Capital Investment Grade Energy and Pipeline Conference on Thursday, March 10, 2011, in New York City, at 8:15 a.m. Eastern Standard Time (7:15 a.m. Central Standard Time).  A copy of the news release is attached as Exhibit 99.1 and is incorporated herein by reference.  Attending for the company will be Robert F. Martinovich, senior vice president, chief financial officer and treasurer of ONEOK Partners GP, L.L.C., our sole general partner, and ONEOK, Inc., and Curtis L. Dinan, former senior vice president, chief financial officer and treasurer of ONEOK Partners GP, L.L.C. and ONEOK, Inc. and current president – natural gas of ONEOK Partners GP, L.L.C. The materials utilized at the conference will be accessible on the ONEOK and ONEOK Partners websites, www.oneok.com and www.oneokpartners.com, on Thursday, March 10, 2011, beginning at 7 a.m. Central Standard Time. The information disclosed in this Item 7.01, including Exhibit 99.1 hereto, 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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|      |   |  Exhibit                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|      |   | 99.1   News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated March 2, 2011.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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|   |          |   | ONEOK Partners, L.P.By:  ONEOK Partners GP, L.L.C.,General Partner          |
|--------|---------------|--------|---------------------------------------------------------------------------------------|
|   |          |   |                                                                                  |
| Date:  | March 3, 2011 | By:    | /s/ Robert F. Martinovich                                                             |
|   |          |   | Robert F. MartinovichSenior Vice President,Chief Financial Officer andTreasurer  |