| Grajski biki | |
| Director: | Jože Pogačnik |
| Starring: | Nikola-Kole Angelovski Maks Bajc Miha Baloh Polde Bibič Hana Brejchová Olivera Markovič |
| Runtime: | 88 minutes |
| Country: | Yugoslavia |
| Language: | Slovene |
Grajski biki is a 1967 Yugoslav film directed by Jože Pogačnik. Its international English title is Stronghold of Toughs.
The film is a somber social drama in which war orphans rebel against teachers and authority figures in their reform school. It stars Danny, a teen punk who organizes a breakout, only to become a victim of the code of toughness by which he lives. Sex and violence are included in the sometimes confusing story that appeared at the Mannheim Film Festival in 1967.