|   | (Date      of report)                  | August      5, 2010 |
|--------|----------------------------------------|---------------------|
|   | (Date      of earliest event reported) | August      4, 2010 |

| 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      August 4, 2010, we announced we will participate in the Bank of      America Merrill Lynch Bakken Day on Wednesday, August 11, 2010, in Minot,      N.D. Terry      K. Spencer, chief operating officer of ONEOK Partners GP, L.L.C., will      present.  |
| Item 9.01 |   | Financial Statements and      Exhibits                                                                                                                                                                                                                                            |
|      |   |  Exhibits                                                                                                                                                                                                                                                                    |
|      |   | 99.1   News      release issued by ONEOK Partners, L.P. dated August 4,    2010.                                                                                                                                                                                   |
|      |   |                                                                                                                                                                                                                                                                              |

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|   |                |   | ONEOK      Partners, L.P.By:  ONEOK      Partners GP, L.L.C., General      Partner |
|--------|---------------------|--------|----------------------------------------------------------------------------------------------|
|   |                |   |                                                                                         |
| Date:  | August      5, 2010 | By:    | /s/ Curtis L. Dinan                                                                          |
|   |                |   | Senior      Vice President -Chief      Financial Officer andTreasurer                   |