Larrouy Island () is an island 5 nautical miles (9 km) long and 2 nautical miles (3.7 km) wide which rises to 745 m, lying in Grandidier Channel, 4 nautical miles (7 km) north of Ferin Head. Discovered by the French Antarctic Expedition, 1903–05, under Charcot, who named it for Monsieur Larrouy, at that time a French Minister Plenipotentiary.
This article incorporates public domain material from the United States Geological Survey document "Larrouy Island" (content from the Geographic Names Information System).