POWER OF ATTORNEY

    Know by all these present, that the undersigned hereby constitutes and
    appoints each of C. BRENT SMITH, ROBERT E. BOWERS, or LAURA P. MOON
    signing singly, 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
        PIEDMONT OFFICE REALTY TRUST, 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;

    (2)    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 and
        timely file such form with the United States
        Securities and Exchange Commission and 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, 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
    27th day of February, 2020.


    /s/ Glenn G. Cohen

             Glenn G. Cohen