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