EXHIBIT 24
POWER OF ATTORNEY

		Know all by these presents that the undersigned hereby constitutes and
appoints Stephanie D. Miller the undersigned's true and lawful attorney-in-fact
to:

(1)     execute for and on behalf of the undersigned, in the undersigned's
capacity as a director, officer and/or employee of Mallinckrodt public limited
company (the "Company"), Forms 3, 4, 5, Form 144 and/or Form ID in accordance
with Section 16(a) of the Securities Exchange Act of 1934 and the rules
thereunder and/or Rule 144 under the Securities Act of 1933, respectively;

(2)     execute for and on behalf of the undersigned any such filings or other
disclosure related to the undersigned's holdings of and transactions in
securities of the Company as may be required pursuant to the Companies Act 2014
of Ireland (the "Companies Act");

(3)     do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete the execution of (a) any such
Forms 3, 4, 5, Form 144 and Form ID or (b) any disclosures under the Companies
Act and timely file such form or forms with the United States Securities and
Exchange Commission, the Irish Companies Registration Office and/or any other
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 such attorney-in-fact full power and
authority to do and perform all and every act and thing whatsoever requisite,
necessary and 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-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 the foregoing 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 undersigned's responsibilities to
comply with the Companies Act, Section 16 of the Securities Exchange Act of
1934 or Rule 144 under the Securities Act of 1933.

		This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, 5, and Form 144 and make
disclosure under the Companies Act 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 attorney-in-
fact. This Power of Attorney shall supersede any and all existing Powers of
Attorney with respect to the subject matter hereof.

		IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 2nd day of February, 2018.



/s/ Mark J. Casey
_______________________
Mark J. Casey