POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
Sandra Thomson, the undersigneds true and lawful attorney in-fact to:

(1) execute for and on behalf of the undersigned, in the undersigneds capacity
as an officer and/or director of Achieve Life Sciences, Inc. (the Company),
Forms 3, 4 and 5 (including amendments thereto) in accordance with Section 16(a)
of the Securities Exchange Act of 1934, as amended (the Exchange Act), and the
rules and regulations thereunder and a Form ID, Uniform Application for Access
Codes to File on Edgar (collectively, Forms);

(2) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete, execute and timely file any and all
such Forms with the United States Securities and Exchange Commission and any
stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-facts discretion.

The undersigned hereby grants to such attorney-in-fact full power and authority
to do and perform any and every act and thing whatsoever requisite, necessary or
proper to be done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the undersigned might or could
do if personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-facts substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that such attorney-in-fact, in serving in
such capacity at the request of the undersigned, is not assuming, nor is the
Company assuming, any of the undersigneds responsibilities to comply with
Section 16 of the Exchange Act.

The undersigned agrees that each such attorney-in-fact herein may rely entirely
on information furnished orally or in writing by the undersigned to such
attorney-in-fact.  The undersigned also agrees to indemnify and hold harmless
the Company and such attorney-in-fact against any losses, claims, damages or
liabilities (or actions in these respects) that arise out of or are based upon
any untrue statements or omission of necessary facts in the information provided
by the undersigned to such attorney-in fact for purposes of executing,
acknowledging, delivering or filing such Forms and agrees to reimburse the
Company and such attorney-in-fact for any legal or other expenses reasonably
incurred in connection with investigating or defending against any such loss,
claim, damage, liability or action.
This Power of Attorney supersedes any power of attorney previously executed by
the undersigned regarding the purposes outlined in the first paragraph hereof
(Prior Powers of Attorney), and the authority of the attorney-in-fact named in
any Prior Powers of Attorney is hereby revoked.
This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file any such Forms with respect to the
undersigneds holdings of and transactions in securities issued by the Company,
unless earlier (a) revoked by the undersigned in a signed writing delivered to
such attorney-in-fact or (b) superseded by a new power of attorney regarding the
purposes outlined in the first paragraph hereof dated as of a later date.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of March 15, 2021.


Bridget Martell