Brían F. O'Byrne

Acting

Brían F. O'Byrne

Born May 16, 1967Mullagh, County Cavan, Ireland52 credits

Brían Francis O'Byrne (born 16 May 1967) is an Irish actor who works mostly in the United States. He was born in Mullagh, County Cavan.  O'Byrne first attracted notice for his performances in the Martin McDonagh plays The Beauty Queen of Leenane (1996) as Pato Dooley (for which he received a Tony Award nomination for Best Featured Actor in a Play) and The Lonesome West (1997). He is known for taking on serious and dramatic roles, such as a serial killer in Frozen (1998) (for which he won a Tony Award) and a priest accused of child molestation in Doubt (2004), for which he received a Tony nomination. O'Byrne also appeared as a priest in the 2004 film Million Dollar Baby. In May 2007, O'Byrne was nominated for a Tony Award for his performance as Alexander Herzen in Tom Stoppard's 2002 trilogy The Coast of Utopia. In 2011, he was nominated for the Primetime Emmy Award for Outstanding Supporting Actor in a Miniseries or a Movie for his performance in Mildred Pierce as Bert Pierce.

Known For

Filmography

The Abandons
2025The Abandons
as Walter PaxtonTV
Dead of Winter
2025Dead of Winter
as Tall HunterMovie
Conclave
2024Conclave
as O'MalleyMovie
Twig
2024Twig
as LeonMovie
The Wonder
2022The Wonder
as John FlynnMovie
Sergio
2020Sergio
as Gil LoescherMovie
Nightflyers
2018Nightflyers
as AuggieTV
Manhunt
2017Manhunt
as Frank McAlpineTV
Little Boy Blue
2017Little Boy Blue
as Steve JonesTV
The Magicians
2015The Magicians
as MayakovskyTV
Saints & Strangers
2015Saints & Strangers
as John BillingtonTV
The Bastard Executioner
2015The Bastard Executioner
as Baron VentrisTV
Aquarius
2015Aquarius
as Ken KarnTV
Queen & Country
2015Queen & Country
as RSM DigbyMovie
The Last Ship
2014The Last Ship
as Sean RamseyTV
Jimmy's Hall
2014Jimmy's Hall
as Commander O'KeefeMovie
Medeas
2013Medeas
as EnnisMovie
Gilded Lilys
2013Gilded Lilys
as Edwin LilyMovie
Prime Suspect
2011Prime Suspect
as Reg DuffyTV
Mildred Pierce
2011Mildred Pierce
as Bert PierceTV
Love/Hate
2010Love/Hate
as Inpector Mick MoynihanTV
Brooklyn's Finest
2010Brooklyn's Finest
as Det. Ronny RosarioMovie
FlashForward
2009FlashForward
as Aaron StarkTV
The International
2009The International
as The ConsultantMovie
Alexander Hamilton
2007Alexander Hamilton
as Alexander HamiltonMovie
Bug
2007Bug
as Dr. SweetMovie
Brotherhood
2006Brotherhood
as ColinTV
The New World
2005The New World
as LewesMovie
Million Dollar Baby
2004Million Dollar Baby
as Father HorvakMovie
Easy
2003Easy
as Mick McCabeMovie
Intermission
2003Intermission
as MickMovie
Mapmaker
2001Mapmaker
as Richie MarkeyMovie
Bandits
2001Bandits
as Darill MillerMovie
Disco Pigs
2001Disco Pigs
as GerryMovie
The Grey Zone
2001The Grey Zone
as InterrogatorMovie
The Last Bus Home
1997The Last Bus Home
as JessopMovie
Oz
1997Oz
as Padraic ConnellyTV
Avenue X
1993Avenue X
as SonnyMovie
American Experience
1988American Experience
as Alexander HamiltonTV
S
Seahorse
as GeorgeMovie