|   | (Date of report)                  | January 20, 2012 |
|--------|-----------------------------------|------------------|
|   | (Date of earliest event reported) | January 19, 2012 |

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

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| Item 2.02 |   | Results of Operations and Financial Condition                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|-----------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      |   |  See discussion below regarding 2011 earnings guidance under Item 7.01, Regulation FD Disclosure.                                                                                                                                                                                                                                                                                                                                                                         |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Item 7.01 |   | Regulation FD Disclosure                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|      |   |  On January 19, 2012, we announced that the board of directors of our general partner, ONEOK Partners GP, L.L.C., approved a cash distribution for the fourth quarter 2011.  A copy of the news release is attached as Exhibit 99.1 and is incorporated herein by reference. On January 19, 2012, we released our 2011 earnings guidance.  A copy of the news release is attached as Exhibit 99.2 and is incorporated herein by reference.  |
| Item 8.01 |   | Other Events                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|      |   | On January 19, 2012, the board of directors of our general partner, ONEOK Partners GP, L.L.C., approved a cash distribution of 61 cents per unit effective for the fourth quarter 2011.  The fourth-quarter distribution is payable on February 14, 2012, to unitholders of record as of January 31, 2012.                                                                                                                                                      |
| Item 9.01 |   | Financial Statements and Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|      |   |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|      |   | 99.1    News release issued by ONEOK Partners, L.P. dated January 19, 2012.99.2    News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated January 19, 2012.                                                                                                                                                                                                                                                                 |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |

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|   |             |   | ONEOK Partners, L.P.By:  ONEOK Partners GP, L.L.C., General Partner            |
|--------|------------------|--------|------------------------------------------------------------------------------------------|
|   |             |   |                                                                                     |
| Date:  | January 20, 2012 | By:    | /s/ Robert F. Martinovich                                                                |
|   |             |   | Robert F. MartinovichExecutive Vice President,Chief Financial Officer andTreasurer  |