The Simmons Block is a historic block at 86—90 Park Street in Adams, Massachusetts. The building is a Queen Anne house originally built for A.H. Simmons, a successful Adams businessman of the 1880s. The structure features a variety of rooflines and a small tower in a typical Queen Anne style. In the 20th century the building has seen a variety of commercial uses, including as an apartment house and a funeral parlor. The building was listed on the National Register of Historic Places in 1982.