The Beast Within
- Blwyddyn: 1982
- Gwlad: United States of America
- Genre: Horror, Fantasy, Science Fiction
- Stiwdio: Katzka, United Artists, Metro-Goldwyn-Mayer
- Allweddair: mutation, psychotronic
- Cyfarwyddwr: Philippe Mora
- Cast: Ronny Cox, Bibi Besch, Paul Clemens, R.G. Armstrong, L.Q. Jones, Don Gordon