US Post Office—Great Barrington Main is a historic post office at 222 Main Street in Great Barrington, Massachusetts. It was designed by architect Lorimer Rich and constructed in 1935. It was built principally of brick, with marble, wood, and concrete details. The building is basically rectangular, with a wooden portico supported by Doric columns projecting from the center of the building's front, providing shelter for the main entrance. The columns are of concrete, the steps leading to the entrance are of granite, and there is marble detailing on the building walls. Inside, the postmaster's office is to the left, while banks of post office boxes line the walls in an L shape on the right. The back of the building, where mail is processed, is separated from the public space by a service area.The building was listed on the National Register of Historic Places in 1986.
