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 twenty-fourth and last letter of the Greek alphabet. It is synonymous with a set's end or limit.
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