Bergen will make her bow on the Nov. 29 Thanksgiving-themed episode, The Hollywood Reporter said Friday.
Bergen actually beat Davis to the punch as the first woman president, The Reporter noted. She was commander in chief for the 1964 movie "Kisses for My President" with Fred MacMurray.
Bergen won an Emmy in 1958 for "Playhouse 90." She was nominated for Emmys for the 1988 miniseries "War and Remembrance" and the 1983 miniseries "The Winds of War" -- both on ABC.