Duffy of San Quentin
- Godina: 1954
- Zemlja: United States of America
- Žanr: Drama, Crime
- Studio: Warner Bros. Pictures
- Ključna riječ: prison, san quentin
- Direktor: Walter Doniger
- Uloge: Louis Hayward, Joanne Dru, Paul Kelly, Maureen O'Sullivan, George Macready, Horace McMahon