Ifo Island is a low rocky island 370 m (0.2 nmi) southeast of Hélène Island at the western end of the Géologie Archipelago, Antarctica. It was photographed from the air by U.S. Navy Operation Highjump, 1946–47, and was charted and named by the French Antarctic Expedition, 1949–51, under André-Frank Liotard. "Ifo" is an approximate phonetic spelling of "il faut," a much-used expression by the French expedition meaning "one (you) must."

• List of Antarctic and sub-Antarctic islands

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