Sandwood Bay (Scottish Gaelic: Bàgh Seannabhad) is a natural bay in Sutherland, on the far north-west coast of mainland Scotland. It is best known for its remote 1 mile (1.6 km) long beach and Am Buachaille, a sea stack, and lies about 5 miles (8.0 km) south of Cape Wrath. Behind the bay's large dunes, stretches the freshwater Sandwood Loch.