|   | (Date      of report)                  | December      21, 2009 |
|--------|----------------------------------------|------------------------|
|   | (Date      of earliest event reported) | December      21, 2009 |

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

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| Item 5.02 |   | Departure of Directors or Certain Officers;      Election of Directors; Appointment of Certain Officers; Compensatory      Arrangements of Certain Officers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|      |   | James      C. Kneale, 58, will retire from his position as President of ONEOK      Partners GP, L.L.C. (“ONEOK Partners GP”), the sole general partner of      ONEOK Partners, L.P., on January 1, 2010.  Mr. Kneale will also      retire from the Board of Directors of ONEOK Partners GP on January 1,      2010. Mr. Kneale will continue to serve as both a director and as      President until such date.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|      |   | The      Board of Directors of ONEOK Partners GP has elected Terry K. Spencer, 50,      to ONEOK Partners GP’s Board of Directors effective January 1, 2010 to      fill the vacancy created by Mr. Kneale’s retirement.  Mr.      Spencer has served as ONEOK Partners GP’s Chief Operating Officer since      July 16, 2009.  From 2007 until his appointment as ONEOK      Partners GP’s Chief Operating Officer, Mr. Spencer served as Executive      Vice President – Natural Gas Liquids of ONEOK Partners GP.  Mr.      Spencer previously served as President – Natural Gas Liquids for ONEOK      Partners GP from April 2006 and served as our Senior Vice President –      Natural Gas Liquids from July 2005 to March 2006.  From 2003 to      2005, he served as Vice President and General Manager of Gas Supply and      Project Development for ONEOK, Inc. |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|      |   | As      an officer of ONEOK Partners GP, Mr. Spencer is eligible to participate in      the benefit plans described under the “Compensation Discussion and      Analysis” on pages 28 through 39 of ONEOK, Inc.’s Proxy Statement relating      to its 2009 Annual Meeting of Shareholders, as filed with the United      States Securities and Exchange Commission on March 27, 2009 (and such      descriptions are incorporated herein by this reference).  Mr.      Spencer entered into the standard Termination Agreement that ONEOK, Inc.      enters into with certain of its officers on January 1, 2005, with terms      described in more detail in our Current Report on Form 8-K filed July 17,      2009 (and such description is incorporated herein by this reference), but      excluding the right to receive accelerated vesting of retirement and other      benefits.                                             |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |
| Item 9.01 |   | Financial Statements and      Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |
|      |   |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |
|      |   | 99.1      News      release of ONEOK Partners, L.P. dated December 21, 2009 announcing      director election.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |
|      |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |

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|   |                   |   | ONEOK      Partners, L.P.By:  ONEOK      Partners GP, L.L.C., General      Partner             |
|--------|------------------------|--------|----------------------------------------------------------------------------------------------------------|
|   |                   |   |                                                                                                     |
| Date:  | December      21, 2009 | By:    | /s/      Curtis L. Dinan                                                                                 |
|   |                   |   | Curtis      L. DinanExecutive      Vice President -Chief      Financial Officer and      Treasurer  |

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| Exhibit Number | Description |
|----------------|-------------|
|           | 99.1        | News      release of ONEOK Partners, L.P. dated December 21, 2009 announcing      director appointment.      |