POWER OF ATTORNEY WITH RESPECT TO FORMS 3,4and 5
The undersigned hereby constitutes and appoints each of
(i)the secretary and any Assistant secretary of
Northern Trust corporation, and (ii)Darren c. Baker,
Paul A. Bernacki, and Carlen sellers of Schiff Hardin LLP,
or any of the foregoing persons acting singly, and with
full power of substitution, as 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 an officer and/or director of Northern
Trust corporation, a Delaware corporation (the "corporation"),
Forms 3, 4, and 5 in accordance with
section 16(a)of the securities Exchange Act of 1934 and the rules
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 Form 3, 4, or 5, complete and execute any
amendment thereto, and file such Form with
the united States securities and Exchange commission, through
the use of EDGAR, the Electronic Data Gathering,
Analysis, and Retrieval system, and with any stock exchange or
similar authority; and

(3)
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 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 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 attorneys-in-fact, in serving in such
capacity at the request of the undersigned,
re not assuming, nor is the corporation assuming, any of the undersigned's
responsibilities to comply with section 16
of the securities Exchange Act of 1934. 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 Corporation, 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 lst day of May, 2012.

/s/Richard D. Kukla
Section 16 POA