ALCOA CORPORATION
POWER OF ATTORNEY

     KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned director and/or
officer of Alcoa Corporation, a Delaware corporation (the "Company"), hereby
constitute and appoint Marissa P. Earnest, Eryn F. Correa, Mary A. Vogel and any
Assistant Secretary of the Company, and each of them, my true and lawful
attorneys-in-fact and agents, with full power to act, together or each without
the other, with full power of substitution and resubstitution, for me and in my
name, place and stead, in any and all capacities, to execute and file for and on
behalf of the undersigned (i) any reports on Forms 3, 4 and 5 (including any
amendments thereto and any successors to such Forms) with respect to ownership
acquisition or disposition of securities of the Company that the undersigned may
be required to file with the U.S. Securities and Exchange Commission (the "SEC")
in accordance with Section 16(a) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the rules promulgated thereunder, (ii) any
voluntary filings under Section 16(a) of the Exchange Act, (iii) to request
electronic filing codes from the SEC by filing the Form ID (including amendments
thereto) and any other documents necessary or appropriate to obtain codes and
passwords enabling the undersigned to file such reports electronically, (iv) any
documents or reports that may be required under SEC Rule 144 to permit the
undersigned to sell Company common stock without registration under the
Securities Act of 1933, as amended (the "Securities Act") in reliance on Rule
144 as amended from time to time, or (v) take any other action of any type
whatsoever in connection with the foregoing which, in the opinion of such
attorneys-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 attorneys-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 attorneys-in-fact may approve in such attorney-in-fact's or
attorneys-in-fact's discretion.

      The undersigned acknowledges that 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(a) of the Exchange Act or the Securities Act.  The Company will
use all reasonable efforts to apprise the undersigned of applicable filing
requirements for purposes of Section 16(a) of the Exchange Act or the Securities
Act.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings 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.  This Power of Attorney revokes and replaces any
prior Power of Attorney executed by the undersigned with respect to the
ownership, acquisition or disposition of securities of the Company.


      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 24th day of January, 2019.





Signature: /s/ Jeffrey D. Heeter



Printed Name: Jeffrey D. Heeter