|   | (Date of report)                  | April 23, 2012 |
|--------|-----------------------------------|----------------|
|   | (Date of earliest event reported) | April 18, 2012 |

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

----

| Item 7.01 | Regulation FD Disclosure                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      |  On April 18, 2012, ONEOK, Inc. and ONEOK Partners, L.P. announced they will release their first-quarter 2012 earnings after the market closes on Tuesday, May 1, 2012, and will hold a joint conference call and live webcast at 11 a.m. Eastern Daylight Time (10 a.m. Central Daylight Time), Wednesday, May 2, 2012.  The call will also be carried live on the ONEOK and ONEOK Partners websites.  A copy of the news release is attached as Exhibit 99.1 and is incorporated herein by reference. On April 19, 2012, we announced that the board of directors of our general partner, ONEOK Partners GP, L.L.C., approved a cash distribution for the quarter ended March 31, 2012.  A copy of the news release is attached as Exhibit 99.2 and is incorporated herein by reference. On April 19, 2012, we announced plans to invest $340 million to $360 million to construct a new natural gas processing plant and related infrastructure in Canadian County, Oklahoma.  A copy of the news release is attached as Exhibit 99.3 and is incorporated herein by reference. The information disclosed in this Item 7.01, including Exhibits 99.1, 99.2 and 99.3 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.  |
| Item 8.01 | Other Events                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|      | On April 19, 2012, the board of directors of our general partner, ONEOK Partners GP, L.L.C., approved a cash distribution of 63.5 cents per unit effective for the first quarter 2012.  The first-quarter distribution is payable on May 15, 2012, to unitholders of record as of April 30, 2012.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Item 9.01 | Financial Statements and Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|      |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|      | 99.1   News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated April 18, 2012 - Earnings Call99.2   News release issued by ONEOK Partners, L.P. dated April 19, 2012 - Quarterly Distribution99.3   News release issued by ONEOK Partners, L.P. dated April 19, 2012 - Canadian Valley Plant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |

----

|   |           |   | ONEOK Partners, L.P.By:  ONEOK Partners GP, L.L.C.,General Partner             |
|--------|----------------|--------|------------------------------------------------------------------------------------------|
|   |           |   |                                                                                     |
| Date:  | April 23, 2012 | By:    | /s/ Robert F. Martinovich                                                                |
|   |           |   | Robert F. MartinovichExecutive Vice President,Chief Financial Officer andTreasurer  |