Irizar Island () is an island 0.5 miles (0.8 km) long, lying 0.5 miles (0.8 km) northeast of Uruguay Island in the northeast part of the Argentine Islands, in the Wilhelm Archipelago. Discovered by the French Antarctic Expedition, 1903-05, under Charcot, and named by him for Captain Julian Irizar, Argentine Navy. The island was recharted in 1935 by the British Graham Land Expedition (BGLE) under Rymill.
This article incorporates public domain material from the United States Geological Survey document "Irizar Island" (content from the Geographic Names Information System).