|   | (Date of report)                  | June 2, 2010 |
|--------|-----------------------------------|--------------|
|   | (Date of earliest event reported) | June 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 June 1, 2010, we announced that we will participate in the Citi Power, Gas, Coal and Alternative Energy Conference in Washington, D.C., on Tuesday, June 8, 2010. Robert F. Martinovich, chief operating officer of ONEOK, Inc., and Curtis L. Dinan, chief financial officer and treasurer for 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 and ONEOK, Inc.'s websites, www.oneok.com, www.oneokpartners.com, June 8, beginning at 7:00 a.m. Central Daylight Time.  |
| Item 9.01 |   | Financial Statements and Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|      |   |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|      |   | 99.1   News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated June 1, 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

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|   |         |   | ONEOK Partners, L.P.By:  ONEOK Partners GP, L.L.C., General Partner |
|--------|--------------|--------|-------------------------------------------------------------------------------|
|   |         |   |                                                                          |
| Date:  | June 2, 2010 | By:    | /s/ Curtis L. Dinan                                                           |
|   |         |   | Executive Vice President -Chief Financial Officer andTreasurer           |