Cliff Island (66°0′S 65°39′W / 66.000°S 65.650°WCoordinates: 66°0′S 65°39′W / 66.000°S 65.650°W) is a narrow cliffed island at the south side of Mutton Cove, lying immediately south of Upper Island and 8 nautical miles (15 km) west of Prospect Point, off the west coast of Graham Land, Antarctica. It was charted and named by the British Graham Land Expedition under John Rymill, 1934–37.
This article incorporates public domain material from the United States Geological Survey document "Cliff Island" (content from the Geographic Names Information System).