La porta del cannone
- Taon: 1969
- Bansa: France, Italy, Yugoslavia
- Genre: War
- Studio: Prodi Cinematografica, Paris Étoile Film, Triglav film
- Keyword: secret agent
- Direktor: Leopoldo Savona
- Cast: Gianni Garko, Irina Demick, Gianna Serra, Marijan Lovrić, Tony Santaniello, Boris Cavazza