A Force of One
- Taon: 1979
- Bansa: United States of America
- Genre: Action, Adventure, Crime, Drama, Thriller
- Studio: American Cinema Productions
- Keyword: martial arts, showdown, police, gangster, karate, special unit, vigilante, serial killer, urban setting, murder mystery
- Direktor: Paul Aaron
- Cast: Chuck Norris, Jennifer O'Neill, Clu Gulager, Ron O'Neal, Bill Wallace, Eric Laneuville