The Beast Within
- År: 1982
- Land: United States of America
- Genre: Skräck, Fantasy, Science Fiction
- Studio: Katzka, United Artists, Metro-Goldwyn-Mayer
- Nyckelord: mutation, psychotronic
- Direktör: Philippe Mora
- Kasta: Ronny Cox, Bibi Besch, Paul Clemens, R.G. Armstrong, L.Q. Jones, Don Gordon