Cotuit is a village on Cape Cod in the Town of Barnstable, Massachusetts, United States. Located on a peninsula on the south side of Barnstable about midway between Falmouth, Massachusetts and Hyannis, Massachusetts. Cotuit is bounded by the Santuit River to the west on the Mashpee, Massachusetts town line, the villages of Marstons Mills, Massachusetts to the north, and Osterville, Massachusetts to the east, and Nantucket Sound to the south. Cotuit is primarily residential with several small beaches including Ropes Beach, Riley's Beach, The Loop Beach and Oregon Beach.