- either of two species of long-armed, arboreal great ape, the only extant members of the subfamily Ponginae, inhabiting Borneo (Pongo pygmaeus) and Sumatra (P. abelii): both species, including all three of the Bornean subspecies, are endangered.
- a large anthropoid ape, Pongo pygmaeus, of the forests of Sumatra and Borneo, with shaggy reddish-brown hair and strong arms
