Cape Leguillou () is a point which forms the north tip of Tower Island, at the northeast end of Palmer Archipelago. Charted by a French expedition under Captain Jules Dumont d'Urville, 1837–40, and named by him for Elie Le Guillou, a surgeon on the expedition ship the charts of the d'Urville expedition and has been consistently used since that time.
This article incorporates public domain material from the United States Geological Survey document "Cape Leguillou" (content from the Geographic Names Information System).