Bronx Central Annex-U.S. Post Office is a historic post office building located at the Bronx, New York, United States. It was built from 1935 to 1937, and designed by consulting architect Thomas Harlan Ellett (1880-1951) for the Office of the Supervising Architect.
The building is constructed of smooth gray brick and is surrounded by a granite terrace. It features graceful window openings set within marble arches. On the terrace are two sculptures dating to 1936: "The Letter" by Henry Kreis and "Noah" by Charles Rudy. The interior features 13 mural panels inspired by Walt Whitman's poem I See America Working. They were executed by Ben Shahn (1898-1969) and his wife Bernarda Bryson Shahn (1903-2004) and were completed in August 1939. It was listed on the National Register of Historic Places in 1980.