Shamus O'Brien
- Taon: 1912
- Bansa: United States of America
- Genre: Drama, History
- Studio: Independent Moving Pictures Co. of America (IMP)
- Keyword:
- Direktor: Otis Turner
- Cast: King Baggot, Vivian Prescott, William Robert Daly, Augustus Balfour, William E. Shay, Herbert Brenon