Chorus giganteus is a species of sea snail in the family Muricidae. It is endemic to the coast of Chile, where it occurs from Antofagasta (23° S) to the south of the country (around 39° S) at depths of 8–30 metres (26–98 ft). It is a benthic predator that lives on rocks in temperate waters. It has been overexploited by local fishermen in much of its range.