POWER OF ATTORNEY

       The undersigned hereby constitutes and appoints Theodore W. Ullyot, David
Kling and Michael Johnson, or either of them, the undersigned's true and lawful
attorney-in-fact to:

(1)	prepare, execute in the undersigned's name and on the undersigned's behalf,
and submit to the U.S. Securities and Exchange Commission (the "SEC") a Form ID,
including amendments thereto, and any other documents necessary or appropriate
to obtain codes and passwords enabling the undersigned to make electronic
filings with the SEC of reports required by Section 16(a) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), or any rule or regulation
of the SEC;

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

(3)	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 form with the SEC and any stock exchange or similar
authority; and

(4)	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-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, are 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.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 11 day of April, 2012.

/s/ SHERYL K. SANDBERG
Sheryl K. Sandberg