|   | (Date of report)                  | December 19, 2011 |
|--------|-----------------------------------|-------------------|
|   | (Date of earliest event reported) | December 14, 2011 |

| 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.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
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|      |  Executive Officer Changes Terry K. Spencer, 52, who currently serves as Chief Operating Officer and a member of the Board of Directors of ONEOK Partners GP, L.L.C. (“ONEOK Partners GP”), the sole general partner of ONEOK Partners, L.P., will assume the role of President of ONEOK Partners GP, effective January 1, 2012. John W. Gibson, 59, who currently serves as Chairman, President and Chief Executive Officer of ONEOK Partners GP, will continue to serve as both Chairman and Chief Executive Officer of ONEOK Partners GP after such date. 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 Senior Vice President – Natural Gas Liquids for ONEOK Partners GP from July 2005 to March 2006. Pierce H. Norton II, 51, who currently serves as Chief Operating Officer of ONEOK, Inc., will assume the roles of Executive Vice President and Chief Operating Officer of ONEOK Partners GP.  Mr. Norton has served as Chief Operating Officer of ONEOK, Inc. since March 2011.  From July 2009 until his appointment as Chief Operating Officer of ONEOK, Inc., Mr. Norton was President of ONEOK Distribution Companies.  Mr. Norton previously served as Executive Vice President - Natural Gas for ONEOK Partners GP.  Mr. Norton was appointed President of ONEOK Partners GP’s Gathering and Processing segment in January 2006 and served in this capacity until his appointment as Executive Vice President - Natural Gas for ONEOK Partners GP. Robert F. Martinovich, 54, who currently serves as Senior Vice President, Chief Financial Officer, and Treasurer of ONEOK, Inc. and ONEOK Partners GP, will assume the role of Executive Vice President of ONEOK Partners GP, effective January 1, 2012.  He will continue to serve as Chief Financial Officer and Treasurer of ONEOK Partners GP, and will remain a member of the ONEOK Partners GP Board of Directors.  Mr. Martinovich was Chief Operating Officer of ONEOK, Inc. from July 2009 until March 2011.  From 2007 until his appointment as Chief Operating Officer of ONEOK, Inc. and ONEOK Partners GP, Mr. Martinovich was President of ONEOK Partners GP Natural Gas Gathering and Processing segment. |

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|      | Election of a New Director On December 15, 2011, ONEOK, Inc., in its capacity as the sole member of ONEOK Partners GP, increased the size of the Board of Directors of ONEOK Partners GP from 10 to 11 directors, effective January 1, 2012. On December 15, 2011, ONEOK, Inc., in its capacity as the sole member of ONEOK Partners GP, also appointed Steven J. Malcolm, 63, to ONEOK Partners GP’s Board of Directors effective January 1, 2012.  Mr. Malcolm will serve on the Audit Committee of ONEOK Partners GP’s Board of Directors.  Mr. Malcolm has also been elected to the Board of Directors of ONEOK, Inc., and will serve on the Audit and Executive Compensation Committees of ONEOK, Inc., effective January 1, 2012.  Prior to joining us, Mr. Malcolm served as President of The Williams Companies, Inc. (“Williams”) from September 2001 until January 2011, Chief Executive Officer of Williams from January 2002 to January 2011, and Chairman of the Board of Directors of Williams from May 2002 to January 2011. Mr. Malcolm served as Chairman of the Board and Chief Executive Officer of Williams Partners GP LLC, the general partner of Williams Partners L.P., from 2005 to January 2011. Mr. Malcolm, as Director of ONEOK Partners GP, will be eligible to receive the cash retainer and meeting fees described under “Director Compensation” on page 97 of ONEOK Partners, L.P.’s 2010 Annual Report on Form 10-K, as filed with the Securities and Exchange Commission on February 22, 2011 (and such descriptions are incorporated herein by reference). |
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|      |
|      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Item 7.01 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Regulation FD Disclosure On December 15, 2011, we announced the election of a new director and the appointment of certain officers.  A copy of each news release is attached as Exhibit 99.1 and 99.2 and is incorporated herein by reference. The information disclosed in this Item 7.01, including Exhibit 99.1 and 99.2 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as expressly set forth by specific reference in such filing. |

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|                 |   | Financial Statements and Exhibits.                                                                                |
|----------------------|--------|-------------------------------------------------------------------------------------------------------------------|
| Item 9.01            |   |  Exhibits                                                                                                    |
|                 |   |                                                                                                              |
| (d)                  |   |  Description                                                                                            |
|  Exhibit Number |   |                                                                                                         |
| 99.1                 |   | News release of ONEOK, Inc. and ONEOK Partners, L.P. dated December 15, 2011, announcing officer appointments.    |
| 99.2                 |   |  News release of ONEOK, Inc. and ONEOK Partners, L.P. dated December 15, 2011, announcing director election. |
|                 |   |                                                                                                              |

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|   |              |       | ONEOK Partners, L.P. By: ONEOK Partners GP, L.L.C., its general partner      |
|--------|-------------------|------------|-----------------------------------------------------------------------------------|
|   |              |       |                                                                              |
| Date:  | December 19, 2011 |   By: | /s/ Robert F. Martinovich                      |
|   |              |       | Robert F. MartinovichSenior Vice President, Chief Financial Officer and Treasurer |
|   |              |       |                                                                              |

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| Exhibit Number | Description                                                                                               |
|----------------|----------------------------------------------------------------------------------------------------------------|
| 99.1           | News release of ONEOK, Inc. and ONEOK Partners, L.P. dated December 15, 2011, announcing officer appointments. |
|           |                                                                                                           |
| 99.2           | News release of ONEOK, Inc. and ONEOK Partners, L.P. dated December 15, 2011, announcing director election.    |