|   | (Date      of report)                  | March      3, 2010 |
|--------|----------------------------------------|--------------------|
|   | (Date      of earliest event reported) | March      1, 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 March 1, 2010, we      announced that we will participate in the UBS Natural Gas, Electric Power      and Coal Conference in Dallas on Thursday, March 4, 2010. Rob      Martinovich, chief operating officer of ONEOK, Inc., and Curtis Dinan,      chief financial officer of ONEOK, Inc. and ONEOK Partners, GP, L.L.C., our      general partner, will be conducting a series of one-on-one meetings with      members of the investment community. The      materials utilized at the conference will be accessible on our Web site,      www.oneokpartners.com, that morning, beginning at 9 a.m. Central Standard      Time. |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Item 9.01 |   | Financial Statements and      Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|      |   |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|      |   | 99.1      News      release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated March 1,      2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |

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|   |               |   | ONEOK      Partners, L.P.By:  ONEOK      Partners GP, L.L.C., General Partner |
|--------|--------------------|--------|-----------------------------------------------------------------------------------------|
|   |               |   |                                                                                    |
| Date:  | March      3, 2010 | By:    | /s/ Curtis L. Dinan                                                                     |
|   |               |   | Executive      Vice President -Chief      Financial Officerand      Treasurer           |
|   |               |   |                                                                                    |