Mister X
- År: 1967
- Land: Italy, Spain
- Genre: Action, Kriminal, Drama
- Studio: Copercines, Cooperativa Cinematográfica, Terra Film
- Nyckelord: superhero
- Direktör: Piero Vivarelli
- Kasta: Pier Paolo Capponi, Gaia Germani, Armando Calvo, Anna Zinnemann, Umberto Raho, Renato Baldini