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