Ifo Island () is a low rocky island 0.2 miles (0.3 km) southeast of Helene Island at the west end of Geologie Archipelago. Photographed from the air by U.S. Navy Operation Highjump, 1946-47. Charted and named by the French Antarctic Expedition under Liotard, 1949-51. Ifo is the phonetic spelling of "il faut," a much-used expression by the French Antarctic Expedition meaning "one (you) must."
This article incorporates public domain material from the United States Geological Survey document "Ifo Island" (content from the Geographic Names Information System).