unincorporated village in Barnstable city, southeastern Massachusetts, U.S., on the southern coast of Cape Cod (Cod, Cape). Its name is that of a local 17th-century Algonquian Indian chief. A popular summer beach and yachting resort with ferryboat services to Nantucket Island (Nantucket) and Martha's Vineyard, it is one of the cape's main business centres and a shipping point for fish and cranberries. The village is the site of the John F. Kennedy (Kennedy, John F.) Hyannis Museum. The family home of the president is in nearby Hyannis Port (Hyannisport).