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Who We Are

We are one of the largest publicly traded master limited partnerships and own 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.

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Corporate Responsibility Report iamge

ONE Responsibility

We have a century-old commitment to operate our assets safely, efficiently and environmentally responsibly. And doing so while supporting the communities in which our employees work and live.

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Call Before You Dig

The national Call Before You Dig number, 811, was created to help protect you from unintentionally hitting underground utility lines while working on digging projects. One call to 811 gets your underground utility lines marked for free.

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ONEOK Partners will mail 2009 Tax Packages, including Schedule K1s, directly to unitholders by Feb. 26, 2010. Unitholders may access their tax information online beginning Feb. 23, 2010.

ONEOK Partners, L.P. 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.


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  • Phone Customer Service Shareholder Inquiries:
    1-877-208-7318

  • E-MailContact ONEOK Partners
  • 811 logoCall 811 before you dig.

  • For questions about a ONEOK Partners' Schedule K-1, please call
    1-800-371-2188.