Austin Hall is a classroom building of the Harvard Law School designed by noted American architect H. H. Richardson.

Single-story wings flank a heavy, two-story central mass, with the reading room extending rearwards to form an overall T shape.

A central entryway framed with Romanesque triple arch is set deep within the building's flat front facade, with an asymmetric stairway tower protruding forwards to its right.

The building is faced with Longmeadow sandstone in striking polychrome patterns, the light stones forming checkerboards within dark, reddish walls.

The reading room's interior has been judged particularly fine for its ornamented fireplace and tie beams carved with the heads of dragons and boars.