Omega may refer to:
- The recurring robot superboss.
- The recurring Weapon creature and superboss.
- The recurring key item.
- The character from Final Fantasy X.
- The ability from Final Fantasy Tactics Advance.
- The character from Final Fantasy: Unlimited.
Omega (capital: Ω, lowercase: ω; Greek Ωμέγα) is the 24th and last letter of the Greek alphabet. It commonly represents the end or a limit of something, such as the concept of "alpha and omega".