POWER OF ATTORNEY
For Executing Forms 3, 4 and 5
Know all persons by these presents, that the undersigned hereby constitutes and appoints each of
the Corporate Secretary and any Assistant Corporate Secretary of SunTrust Banks, Inc. (the "Company"),
signing singly, her 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 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 the "Company", Forms 3, 4, and 5 in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules and regulations 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 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 such attorney-in-fact
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 his or her 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. This Power of
Attorney shall remain in effect until revoked in writing and delivered to the Corporate Secretary of the
Company. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not assuming any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as
of this 1st day of February, 2018.
/s/ L. Allison Dukes
Allison Dukes
Exhibit 24
