Liberty Hall is a historic community building on Main Street in the Marstons Mills village of Barnstable, Massachusetts. The 1-1/2 story structure was built in 1859 by a local community group as a function hall. It has modest Greek Revival styling, with an entablature and corner pilasters, large 12-over-12 sash windows, and an entry vestibule projecting at an angle from one corner. It continues to be used as a community function space, although it was adapted for a time as the local Methodist church's parish hall.The building was listed on the National Register of Historic Places in 1987.