Fortress
- Taon: 1985
- Bansa: Australia
- Genre: Drama, Horror, Thriller
- Studio: Crawford Productions
- Keyword: australia, based on novel or book, underground, kidnapping, cave, elementary school, teacher, revenge, survival, school, outback, australian outback
- Direktor: Arch Nicholson
- Cast: Rachel Ward, Sean Garlick, Elaine Cusick, Laurie Moran, Marc Aden Gray, Ray Chubb