Reign of Terror
- Tahun: 1949
- Negara: United Kingdom, United States of America
- Genre: Drama, Thriller, History
- Studio: Walter Wanger Productions, Eagle-Lion Films
- Kata kunci: paris, france, undercover agent, politics, french revolution, guillotine, film noir, black and white, 18th century, mock trial, robespierre
- Pengarah: Anthony Mann
- Pelakon: Robert Cummings, Richard Basehart, Richard Hart, Arlene Dahl, Arnold Moss, Norman Lloyd