Black Farm, also known as the Isaac Collins Farm, is a historic farm in Hopkinton, Rhode Island bounded by Rockvill-Alton Road (Rhode Island Route 112) and Wood Road. The 264-acre (107 ha) was first developed by John Collins beginning in 1710, and saw agricultural use for over 200 years. The main house dates to the late 18th century, and is a 1-1/2 story gambrel-roofed post-and-beam structure. Other outbuildings include 19th century barns, a corn crib, and a guest cottage added in the 1930s.