Brian F. O'Byrne (born May 16, 1967) is an Irish actor living in the US best known for Mildred Pierce, Million Dollar Baby, and Before the Devil Knows You're Dead.
He is married to actress Heather Goldenhersh and they have two children.
Film Roles
- An Everlasting Piece as George
- Bandits as Darill Miller
- Disco Pigs as Gerry
- The Grey Zone as SS- Untersturmfuhrer
- Easy as Mick McCabe
- Intermission as Mick
- Million Dollar Baby as Father Horvak
- The Blackwater Lightship as Larry (TV Movie)
- The New World (2005) as Lewes
- Bug as Dr. Sweet
- Before the Devil Knows You're Dead as Bobby
- No Reservations (2007) as Sean
- The International as The Consultant
- Brooklyn's Finest as Det. Ronny Rosario
- Season of the Witch as Grandmaster (Uncredited Role)
- Medeas as Ennis
- Jimmys Hall as Commander O'Keefe
- Queen and Country as RSM Digby
- Sergio as Gil
- My Salinger Year as Hugh
Television Roles
- Amongst Women as Luke (4 episodes)
- Oz as Padraig Connolly (3 episodes)
- Law & Order: Special Victims Unit as Liam Connors (1 episode)
- The American Experience as Alexander Hamilton (1 episode)
- Brotherhood as Colin (18 episodes)
- FlashForward (2009) as Aaron Stark (17 episodes)
- Medium as Clark Kerwin (1 episode)
- Mildred Pierce as Bert Pierce
- Prime Suspect as Det. Reg Duffy
- Love/Hate as D.I. Mick Moynihan (11 episodes)
- Aquarius as Ken Karn (22 episodes)
- The Bastard Executioner as Baron Ventris (3 episodes)
- The Last Ship as Sean Ramsey (8 episodes)
- Saints And Strangers as John Billington Sr. (2 episodes)
- The Magicians (2016) as Mayakovsky (3 episodes)
- Little Boy Blue as Steve Jones
- Mercy Street as Allan Pinkerton (5 episodes)
- Manhunt as Frank McAlpine
- Nightflyers as Auggie
- Hatton Garden as Basil
- Lincoln Rhyme: Hunt for the Bone Collector as The Bone Collector
