Day Island (67°15′S 67°42′W / 67.250°S 67.700°W / -67.250; -67.700) is an island, 7 nautical miles (13 km) long and 3 nautical miles (6 km) wide, immediately south of The Gullet and 2 nautical miles (4 km) north of Wyatt Island in the northern part of Laubeuf Fjord, off the west coast of Graham Land in the Antarctic Peninsula. It was first surveyed in 1936 by the British Graham Land Expedition under John Rymill, who gave it the provisional name Middle Island. It was resurveyed in 1948 by the Falkland Islands Dependencies Survey, who renamed it for Vice Admiral Sir Archibald Day, Hydrographer of the Navy.

• Hinks Channel
• List of Antarctic and sub-Antarctic islands

 This article incorporates public domain material from "Day Island". Geographic Names Information System. United States Geological Survey.