Relentless
- Taon: 1989
- Bansa: United States of America
- Genre: Mystery, Thriller, Horror, Crime
- Studio: Out of the Dark Productions, CineTel Films, New Line Cinema
- Keyword: serial killer, police officer, dead woman
- Direktor: William Lustig
- Cast: Judd Nelson, Robert Loggia, Leo Rossi, Meg Foster, Patrick O'Bryan, Ken Lerner