Abyss may refer to:
- The enemy ability from Final Fantasy Tactics Advance.
- The skillset from Final Fantasy Tactics A2: Grimoire of the Rift.
- The location from Final Fantasy Crystal Chronicles.
- The enemy ability from World of Final Fantasy.
Abyss refers to a bottomless pit, to the underworld, to the deepest ocean floor, or to hell, or more loosely to any chasm or large drop.