Omega (disambiguation)

Omega may refer to:
 * Omega (XS1) - a track on the Xenosaga Original Soundtrack
 * omega (XS3 music) - a track from the Music of Xenosaga Episode III
 * omega (instrumental) — a version of the above track with no vocals
 * — a version of the above track with different instrumentation

For the area in Xenosaga Episode II, see Omega System. For its area theme, see Omega System (music).