The Galápagos tortoise complex or Galápagos giant tortoise complex is a species complex of 15 (12 extant and 2-3 extinct) very large tortoise species in the genus Chelonoidis (which also contains three other species from mainland South America).
They are the largest living species of tortoise, with some modern Galápagos tortoises weighing up to 417 kg (919 lb)