Brían F. O'Byrne
Acting • Born 1967-05-16
Biography
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.
Filmography
52 credits
Million Dollar Baby
Movie • 2004
Father Horvak
Bandits
Movie • 2001
Darill Miller
No Reservations
Movie • 2007
Sean
The International
Movie • 2009
The Consultant
Before the Devil Knows You're Dead
Movie • 2007
Bobby Lasorda
Brooklyn's Finest
Movie • 2010
Det. Ronny Rosario
Disco Pigs
Movie • 2001
Gerry
Bug
Movie • 2007
Dr. Sweet
An Everlasting Piece
Movie • 2000
George
Easy
Movie • 2003
Mick McCabe
Intermission
Movie • 2003
Mick
The Grey Zone
Movie • 2001
Interrogator
The New World
Movie • 2005
Lewes
Jimmy's Hall
Movie • 2014
Commander O'Keefe
Queen & Country
Movie • 2015
RSM Digby
Twig
Movie • 2024
Leon
Medeas
Movie • 2013
Ennis
Gilded Lilys
Movie • 2013
Edwin Lily
The Last Bus Home
Movie • 1997
Jessop
Alexander Hamilton
Movie • 2007
Alexander Hamilton
Mapmaker
Movie • 2001
Richie Markey
Sergio
Movie • 2020
Gil Loescher
My Salinger Year
Movie • 2020
Hugh
The Fifth Province
Movie • 1997
Timmy
The Wonder
Movie • 2022
John Flynn
The Blackwater Lightship
Movie • 2004
Larry
Conclave
Movie • 2024
O'Malley
Dead of Winter
Movie • 2025
Tall Hunter
One Sweet Hour
Movie
Seahorse
Movie
George
Avenue X
Movie • 1993
Sonny
Brotherhood
TV • 2006
Colin
Law & Order: Special Victims Unit
TV • 1999
Liam Connors
Oz
TV • 1997
Padraic Connelly
Hallmark Hall of Fame
TV • 1951
Larry
FlashForward
TV • 2009
Aaron Stark
Mildred Pierce
TV • 2011
Bert Pierce
Prime Suspect
TV • 2011
Reg Duffy
Aquarius
TV • 2015
Ken Karn
Saints & Strangers
TV • 2015
John Billington
The Bastard Executioner
TV • 2015
Baron Ventris
Love/Hate
TV • 2010
Inpector Mick Moynihan
Little Boy Blue
TV • 2017
Steve Jones
The Magicians
TV • 2015
Mayakovsky
Nightflyers
TV • 2018
Auggie
Amongst Women
TV • 1998
Luke
Hatton Garden
TV • 2019
Basil
Manhunt
TV • 2017
Frank McAlpine
Lincoln Rhyme: Hunt for the Bone Collector
TV • 2020
The Bone Collector
American Experience
TV • 1988
Alexander Hamilton
The Last Ship
TV • 2014
Sean Ramsey
The Abandons
TV • 2025
Walter Paxton