Exhibit
99.1












January
      28, 2010
              
              Analyst
      Contact:
              Dan
      Harrison918-588-7950Media
      Contact:
              Brad
      Borror918-588-7582




ONEOK
and ONEOK Partners Fourth-quarter and Year-end 2009 Earnings News Releases,
Conference Call and Webcast Scheduled
 
 2010 Earnings News Releases, Conference Calls and Webcasts
Also Scheduled
 
 TULSA,
Okla. – Jan. 28, 2010 – ONEOK, Inc. (NYSE: OKE) and ONEOK Partners, L.P. (NYSE:
OKS) will release their fourth-quarter and year-end 2009 earnings after the
market closes on Feb. 22, 2010.
 
 A joint
conference call will be held the following day on Feb. 23, 2010, at 11 a.m.
Eastern Standard Time (10 a.m. Central Standard Time). The call also will be
carried live on ONEOK’s and ONEOK Partners’ Web sites.
 
 ONEOK’s
and ONEOK Partners’ senior management teams will participate in the call and
webcast.
 
 What:
              ONEOK,
      Inc. and ONEOK Partners fourth-quarter and year-end 2009 earnings
      conference call and webcast
  When:
              11
      a.m. Eastern, Feb. 23, 2010
                10 a.m. Central  Where:
              1)
      Phone conference call 866-814-1913, pass code 1427228
                2) Log on to the webcast at www.oneok.com
                3) Log on to the webcast at
      www.oneokpartners.com
  If you
are unable to participate in the conference call or the webcast, the replay will
be available on ONEOK’s Web site, www.oneok.com, and
ONEOK Partners’ Web site, www.oneokpartners.com,
for 30 days. A recording will be available by phone for seven days. The playback
call may be accessed at 866-837-8032, pass code 224735.
   ONEOK and ONEOK Partners Fourth-quarter and Year-end
2009
 Earnings Conference Call and Webcast
Scheduled
 Page
2
  
 Additionally,
conference calls and webcasts for the first, second and third quarters of 2010
have been scheduled.
 
 ·
              First quarter 2010: News
      release issued – April 28, 2010; Conference call and webcast – April 29,
      2010;
 
 ·
              Second quarter 2010:
      News release issued – Aug. 3, 2010; Conference call and webcast – Aug. 4,
      2010;
 
 ·
              Third quarter 2010: News
      release issued – Nov. 2, 2010; Conference call and webcast – Nov. 3,
      2010.
 
 Each
quarterly earnings news release will be issued following the close of market on
the date indicated.
 
 Each
quarterly conference call and webcast will take place at 11 a.m. Eastern Time
(10 a.m. Central Time) on the date indicated. Conference call dial-in
information will be provided at a later date.
  
 
 ONEOK,
Inc. (NYSE: OKE) is a diversified energy company. We are the general partner and
own 45.1 percent of ONEOK Partners, L.P. (NYSE: OKS), one of the largest
publicly traded master limited partnerships, which is a leader in the gathering,
processing, storage and transportation of natural gas in the U.S. and owns one
of the nation’s premier natural gas liquids (NGL) systems, connecting NGL supply
in the Mid-Continent and Rocky Mountain regions with key market centers. ONEOK
is among the largest natural gas distributors in the United States, serving more
than 2 million customers in Oklahoma, Kansas and Texas. Our energy services
operation focuses primarily on marketing natural gas and related services
throughout the U.S. ONEOK is a Fortune 500 company.
 
 ONEOK
Partners, L.P. (NYSE: OKS) is one of the largest publicly traded master limited
partnerships, and is a leader in the gathering, processing, storage and
transportation of natural gas in the U.S. and owns one of the nation’s premier
natural gas liquids (NGL) systems, connecting NGL supply in the Mid-Continent
and Rocky Mountain regions with key market centers. Its general partner is a
wholly owned subsidiary of ONEOK, Inc. (NYSE: OKE), a diversified energy
company, which owns 45.1 percent of the overall partnership interest. ONEOK is
one of the largest natural gas distributors in the United States, and its energy
services operation focuses primarily on marketing natural gas and related
services throughout the U.S.
 
 For more
information, visit the Web sites at www.oneok.com or
www.oneokpartners.com.
OKE-FV OKS-FV
 
 
 ###