Phase IV
- Joer: 1974
- Land: United Kingdom, United States of America
- Genre: Horror, Science Fiction
- Studio: Paramount Pictures, Alced Productions, PBR Productions
- Schlësselwuert: insect, ant, murder, scientist, desert, based on short story, time lapse photography
- Direkter: Saul Bass
- Besetzung: Nigel Davenport, Michael Murphy, Lynne Frederick, Alan Gifford, Robert Henderson, Helen Horton