Exhibit 24

                               POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
each of Micah Osborne, Andrea Pruitt, LaMonica Johnston, Jennifer Floyd and
Brian Davis, signed singly, 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 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 Home BancShares, Inc. (the
           "Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the
           Securities Exchange Act of 1934 and the rules thereunder, and any
           other forms or reports the undersigned may be required to file in
           connection with the undersigned's ownership, acquisition, or
           disposition of securities of the Company;
     (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, or other form or report, and timely file such form
           or report with the United States Securities and Exchange Commission
           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 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 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, are not assuming,
nor is the Company 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 Company,
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 21st day of April 2022.


/s/ James Pat Hickman
--------------------------------
Signature

James Pat Hickman
--------------------------------
Print Name