Cerberus may refer to:
- The recurring creature.
- The weapon from Dirge of Cerberus -Final Fantasy VII-.
- The server from Final Fantasy XI.
- The paradigm from Final Fantasy XIII and Final Fantasy XIII-2.
Cerberus appears in Greek Mythology as the three-headed dog that guards the gates to the Underworld at the end of the River Styx. Its original appearance is as a monstrous dog with three heads, a snake for a tail, and snakes going down his back as a mane. Although being ferocious and eating anyone who tries to enter the Underworld uninvited, it has been known to be subdued several times through different means.