US Post Office-Garden City is a historic post office building located at Garden City in the town of Hempstead, Nassau County, New York, United States. It was built in 1936 and designed by consulting architects Walker & Gillette for the Office of the Supervising Architect. It is a one-story, square brick building on a granite in the Classical Revival style. The lobby features a 1937 mural by J. Theodore Johnson titled "Huckleberry Frolic." On December 24, 1987, the building was named in honor of former Congressman John W. Wydler (1924-1987).
It was listed on the National Register of Historic Places in 1989.