The undersigned hereby constitutes and appoints William Plovanic,
Andrew Rasdal and Nooshin Hussainy, as long as they are providing services to
Obalon Therapeutics, Inc., a Delaware corporation (the "Company"), or either of
them, the undersigned's true and lawful attorneys-in-fact and agents with full
power of substitution, for him and in his name, place and stead, in any and all
capacities, to:

1.	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of the Company, Forms 3, 4s and 5s in accordance
with Section 16(a) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), and the rules and regulations thereunder;

2.	do and perform any and all acts for and on behalf of the undersigned that may
be necessary or desirable to complete and execute any such Forms 3, 4s and 5s
and timely file 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
that, 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-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform each 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 and revocation, hereby ratifying and confirming all that each such
attorney-in-fact, or each such attorney-in-fact's 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 each of
the foregoing attorneys-in-fact, in serving in such capacity at the request of
the undersigned, is not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.

The undersigned agrees that each such attorney-in-fact may rely entirely
on information furnished orally or in writing by the undersigned to each such
attorney-in-fact. The undersigned also agrees to indemnify and hold harmless the
Company and each such attorney-in-fact against any losses, claims, damages or
liabilities (or actions in these respects) that arise out of or are based on any
untrue statement or omission of necessary facts in the information provided by
the undersigned to such attorney-in-fact for purposes of executing,
acknowledging, delivering and filing Forms 3, 4s or 5s (including amendments
thereto) and agrees to reimburse the Company and each 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 shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4s and 5s with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

(Signature Page Follows)

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 6th day of September, 2017.

				Signature:      /S/ Kelly Huang
				Print Name:	Kelly Huang