| Details | Name | Sex | Title | Studio Years |
|---|---|---|---|---|
| View | O'Brien, Thomas | Male | Actor | 1919 |
| View | O'Brien, Jack | Male | Actor | 1914 |
| View | O'Brien, Billie | Female | Actress | 1914 |
| View | O'Connor, Kathleen | Female | Actress | 1920 |
| View | O'Connor, Mary H. | Female | Scenarist | 1914-17 |
| View | O'Leary, J. R. | Male | Freelance author | 1914 |
| View | Oakes, Nathan | Male | Scenarist | 1916 |
| View | Oakman, Wheeler | Male | Actor | 1919 |
| View | Oliver, J. H. | Male | Carpenter | 1915 |
| View | Orenbach, Michael | Male | Technical Director | 1917 |
| View | Ormston, Frank D. | Male | Art Director | 1915 |
| View | Osborne, William Hamilton | Male | Freelance author | 1913 & 15 |
| View | Osbourn, Lloyd | Male | Scenarist | 1913 |
| View | Osgood, Robert S. | Male | Clerk | 1915-16 |
| View | Otto, Henry | Male | Director | 1914-15 |
| View | Overbaugh, Roy F. | Male | Cameraman | 1911-15 |
| View | Owen, Seena | Female | Actress | 1920 |