2013 Annual Report

The ONEOK 2013 annual report is available online.

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Corporate Responsibility

We recognize that our continued progress in improving our environment, safety and health performance is a result of the goals we set and the commitment of our entire ONEOK team.

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ONEOK is a diversified energy company.
We are the general partner of ONEOK Partners, 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 a Fortune 500 company.


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  • Phone Customer Service Shareholder Inquiries:

    877-208-7318

  • Phone Customer Service Royalties Relations:

    918-588-7463

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  • ONEOK Partners' Schedule K-1 Questions:
    800-371-2188.