Fairwater may refer to: Fairwater, Cardiff, Wales Fairwater (Cardiff electoral ward) Fairwater railway station Fairwater, Double Bay, a heritage-listed house in Double Bay, Sydney, Australia Fairwater, Torfaen, Wales Fairwater, Wisconsin, U.S.A. , a ship Sail (submarine), a vertical extension on most submarines that houses the periscopes, masts, and in some cases the conning tower