The Tyler U.S. Post Office and Courthouse, in Tyler, Texas, also known as Tyler Federal Building, was built during 1933-1934. It is a restrained Classical Revival architecture building. It served historically as a courthouse, as a post office, and as a government office building. The building was listed on the National Register of Historic Places in 2001.It was designed by local architect Shirley Simons under Supervising Architect James A. Wetmore. Its materials include a dark gray mottled granite on the ground floor, light buff limestone cladding the first floor, salmon-colored brick on the second and third floors. Acroterions appear at each corner of a parapet.