Pat J. O'Brien

1921

• [ ] Shadows of the West (Jim Kern) 

1924

• [ ] Marry in Haste (????) 

1928

• [ ] The House of Terror (????) 

1929

• [ ] The Freckled Rascal (Jim Kane) 

1935

• [ ] Outlawed Guns (Babe Rivers) 
• [ ] Tailspin Tommy in The Great Air Mystery (Milt Howe) 
• [ ] The Roaring West (Cowhand Steve) 

1937

• [ ] Tim Tyler's Luck (Patrolman Berry) 

1938

• [ ] Flaming Frontiers (Henchman Harper) 
• [ ] Hawaiian Buckaroo (Steve Wainwright (as Pat O'Brien)) 
• [ ] Panamint's Bad Man (Adams - Mine Owner) 
• [ ] Bar 20 Justice (Frazier) 

1941

• [ ] Bury Me Not on the Lone Prairie (Bill Salters) 
• [ ] Doomed Caravan (Jim Ferber)