Exhibit 23
Consent of Independent Registered Public Accountant
We consent to the incorporation by reference in the registration statement of ONEOK, Inc., on Form S-8 (File No. 333-41263) of our report dated June 2, 2006, on our audit of the financial statements and financial statement schedule of the ONEOK, Inc. Profit Sharing Plan as of December 31, 2005, and for the year ended December 31, 2005, which report is included in this Annual Report on Form 11-K.
/s/ BKD, LLP
Tulsa, Oklahoma
June 22, 2006