Horseshoe Island is an island 12 km (6.5 nmi) long and 6 km (3 nmi) wide occupying most of the entrance to Square Bay, along the west coast of Graham Land, Antarctica.

Its name is indicative of the crescentic alignment of the 600 to 900 m (2,000 to 3,000 ft) peaks which give a comparable shape to the island.

[1] The Turkish Antarctic Research Station is planned to be located on the island.

[citation needed] Lying at the north-western end of the island is Station Y, also known as Horseshoe Base, an inactive but relatively unaltered and completely equipped British research station of the late 1950s.

[4] This article incorporates public domain material from "Horseshoe Island".