Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in the Registration Statement on Form S-1 of Achieve Life Sciences, Inc. of our report dated March 1, 2018 relating to the consolidated financial statements of Achieve Life Sciences, Inc., which appears in Achieve Life Sciences Inc.’s Annual Report on Form 10-K for the year ended December 31, 2017. We also consent to the reference to us under the heading “Experts” in such registration statement.
/s/ PricewaterhouseCoopers LLP
Chartered Professional Accountants
Vancouver, Canada
May 10, 2018