US Post Office-Endicott is an historic post office building located at Endicott in Broome County, New York. It was designed and built in 1936 and is one of a number of post offices in New York State designed by a consulting architect for the Office of the Supervising Architect of the Treasury Department, Walter Whitlack. It is a one story, nine bay steel frame, cream-colored brick clad building on a raised granite-clad foundation executed in the Colonial Revival style. The interior features a 1938 mural titled "Excavating for the Ideal Factory" by Douglass Crockwell.It was listed on the National Register of Historic Places in 1988.