The Greer Post Office is a building listed with the National Register of Historic Places located in Greer, South Carolina. The Colonial Revival style post office was constructed in 1935, produced under the supervision of the Public Works Administration in the New Deal era. It was designed by New York City-based architect Donald G. Anderson, with Louis A. Simon as the supervising architect. The building operated as a post office until 1964, when a new one was built. It was sold to the city of Greer, who renovated the building to serve as the Greer City Hall.