|   | (Date      of report)                  | January      22, 2010 |
|--------|----------------------------------------|-----------------------|
|   | (Date      of earliest event reported) | January      20, 2010 |

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

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| Item    8.01 | Other      Events                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|         |  On      January 20, 2010, the board of directors of our general partner, ONEOK      Partners GP, L.L.C., announced an increase in our quarterly cash      distribution to $1.10 per unit from $1.09 per unit, effective for the      fourth quarter 2009, resulting in an annualized cash distribution of $4.40      per unit.  The fourth-quarter distribution is payable on      February 12, 2010, to unitholders of record as of January 29,      2010. |
|         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Item    9.01 | Financial Statements and      Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|         |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|         | 99.1      News      release issued by ONEOK Partners, L.P. dated January 20,    2010.                                                                                                                                                                                                                                                                                                                                                         |
|         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |

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|   |                  |   | ONEOK      Partners, L.P.By:  ONEOK      Partners GP, L.L.C., General      Partner |
|--------|-----------------------|--------|----------------------------------------------------------------------------------------------|
|   |                  |   |                                                                                         |
| Date:  | January      22, 2010 | By:    | /s/ Curtis L.      Dinan                                                                     |
|   |                  |   | Executive      Vice President -Chief      Financial Officerand      Treasurer                |
|   |                  |   |                                                                                         |