UFO may refer to:
- The enemy from Final Fantasy VIII.
- The enemy from Final Fantasy XIII-2.
- The boss from Mobius Final Fantasy.
An unidentified flying object, or UFO, in its most general definition, is any apparent anomaly in the sky (or near or on the ground, but observed hovering, landing, or departing into the sky) that is not readily identifiable as any known object or phenomenon by visual observation and/or use of associated instrumentation such as radar.