The New Caleonian Giant Gecko or Leach's Giant Gecko (Rhacodactylus leachianus), is a large species of gecko first described by Georges Cuvier in 1829. It is the largest of the Rhacodactylus geckos. At 14 inches (360 mm) total length, it is one of the largest geckos in the world, if not the largest, and is considered an example of island gigantism. R. leachianus is currently being evaluated for protected status by CITES. There are three recognized subspecies of R. leachianus: R. l. aubrianus, R. l. henkeli (first described by Seipp and Obst in 1994), and R. l. leachianus.