ONEOK (OKE) S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Amendment No. 2 to the Registration Statement on Form S-4 (333-216489) of our report dated February 28, 2017 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in ONEOK, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2016. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Tulsa, Oklahoma

May 4, 2017