Known For
| Birth Location | |
|---|---|
| Born |
Movies
Bury Me Not on the Lone Prairie
as Bill Salters
1941
Doomed Caravan
as Jim Ferber
1941
Panamint's Bad Man
as Adams - Mine Owner
1938
Flaming Frontiers
as Henchman Harper
1938
Bar 20 Justice
as Frazier
1938
Hawaiian Buckaroo
as Steve Wainwright (as Pat O'Brien)
1938
Tim Tyler's Luck
as Patrolman Berry
1937
Tailspin Tommy in The Great Air Mystery
as Milt Howe
1935
Outlawed Guns
as Babe Rivers (as Pat O'Brien)
1935
The Roaring West
as Cowhand Steve
1935
The Freckled Rascal
as Jim Kane
1929
1928
Shadows of the West
as Jim Kern
1921
Pat J. O'Brien hasn't worked on any movies or TV shows