SECTION 16 POWER OF ATTORNEY
         With respect to holdings of and transactions in
securities issued by Allergan plc (the "COMPANY"), the
undersigned hereby constitutes and appoints the individuals named
on SCHEDULE A attached hereto and as may be amended from time to
time, or any of them signing singly, with full power of
substitution and resubstitution, to act as 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 United States
Securities and Exchange Commission (the "SEC") a Form ID,
including amendments thereto, and any other documents necessary
or appropriate to obtain and/or regenerate 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, or any rule or regulation of the SEC;
         2.   execute for and on behalf of the undersigned, Forms
3, 4, and 5 in accordance with Section 16 of the Securities
Exchange Act of 1934, as amended, and the rules thereunder;
   3.  do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such Form 3, 4, or 5, complete and execute any
amendment or amendments thereto, 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 his or her discretion.
         The undersigned hereby grants to each 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
and resubstitution or revocation, hereby ratifying and confirming
all that such attorney-in-fact, or such attorneys-in-fact
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 the foregoing
attorneys-in-fact, in serving in such capacity at the request of
the undersigned, are not assuming, nor is any Company assuming,
any of the undersigned's responsibilities to comply with Section
16 of the Securities Exchange Act of 1934, as amended.
         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 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 3rd day of May 2018.

/s/ Matthew Walsh___
NAME: Matthew Walsh
TITLE:  EVP & Chief Financial Officer


































[SIGNATURE PAGE TO SECTION 16 POWER OF ATTORNEY]
SCHEDULE A

Individuals Appointed as Attorney-in-Fact with Full Power of
Substitution and Resubstitution

A. Robert D. Bailey, EVP & Chief Legal Officer and Corporate
Secretary
Matthew Walsh, EVP & Chief Financial Officer
James D'Arecca, SVP, Chief Accounting Officer - Global
Kira Schwartz, Assistant Secretary