Tom O'Brien
Acting
La grande parata
Michael Olysius 'Bull' O'Hara
The Murder in the Museum
Alfred Carr
Moby Dick
Starbuck
Untamed
Moran
The Last Warning
Inspector
On With the Show!
Larry Maloney
Winners Of The Wilderness
Timothy
The Phantom
Police Sgt. Pat Collins
The Flying Fool
Tom Dugan
That's My Daddy
Officer Patrick Moran
Broadway Scandals
Bill Gray
Smiling Irish Eyes
Black Barney
Twelve Miles Out
Irish
San Francisco Nights
Red
Hurricane
Dugan
The Talk of Hollywood
Reel-Mixing Projectionist
White Fang
Matt
The Woman Condemned
First Detective
Fools Highway
Philadelphia O'Brien
The Frontiersman
Abner Hawkins
Tin Hats
Sergeant McGurk
The Gentleman from America
Johnny Day
The Fire Brigade
Joe O'Neil
The Bugle Call
Sgt. Doolan
So This Is Marriage?
Riley
The Devil Within
Wansley
Dance Hall
Truckdriver
The Runaway Express
Sandy McPherson
The Last Edition
Bull - Job Foreman
Trapped
Joe Farley
The Private Life of Helen of Troy
Ulysses
The Sagebrusher
Charlie Dornewald (as Thomas O'Brien)
Take It from Me
Taxi Driver
Call of the West
Bull Clarkson
The Flaming Forest
Mike
Phantom of Santa Fe
Henchman Kildane
His Lucky Day
James - the Chauffeur
The Unexpected Father
Policeman
Poker Faces
The Prizefighter
Granny
The Midnight Special
Dan Padden
The Chorus Kid
Bill Whipple
Crack O' Dawn
Stanley Steele
Tipped Off
Jim 'Pug' Murphy
The Peacock Fan
Sgt. O'Brien
Hell-Bent for Frisco
Fogarty
It's a Cinch
Spike
Plumb Crazy
Olie Margerine
Square Deal Sanderson
Williams (as Thomas O'Brien)
Winner Take All
Dynamite Galloway
Up and Going
Sergeant Langley
What Shall I Do?
Big Jim Brown
Scrap Iron
Battling Burke
Outcast Souls
Officer
Youth to Youth
Ralph Horry
It Can Be Done
Detective
The Mints of Hell
The Scarlet Car
Mitt Deagon
The Winner
Slugger Martin
Untamed Youth
Jim Larson
Traffic in Hearts
Steve Powell