Massachusetts Hall is the oldest building on the campus of Bowdoin College, in Brunswick, Maine.

It is a three-story red-brick structure, with a hip roof and granite trim elements, and a 2-1/2 story ell extending to one side.

The main block measures 50.5 by 40.5 feet (15.4 m × 12.3 m), and is five bays wide, with a central entrance flanked by pilasters and topped by a half-round transom and cornice.

In 1872-73 the interior underwent a major alteration, converting the upper two floors into a single large hall, which was used to house a museum of artifacts related to Cleaveland.

[3] In 1936-37 architect Felix A. Burton oversaw another major rehabilitation, which including restoration of the exterior to its original configuration, and the interior to its present state.