Brían F. O'Byrne
Acting
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 …
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Million Dollar Baby
2004
Father Horvak
Law & Order: Special Victims Unit
1999
Liam Connors
Conclave
2024
O'Malley
Before the Devil Knows You're Dead
2007
Bobby Lasorda
The Magicians
2015
Mayakovsky
No Reservations
2007
Sean
The International
2009
The Consultant
The New World
2005
Lewes
Bandits
2001
Darill Miller
The Last Ship
2014
Sean Ramsey
Brooklyn's Finest
2010
Det. Ronny Rosario
The Wonder
2022
John Flynn
Oz
1997
Padraic Connelly
Bug
2007
Dr. Sweet
FlashForward
2009
Aaron Stark
Manhunt
2017
Frank McAlpine
Sergio
2020
Gil Loescher
Dead of Winter
2025
Tall Hunter
Mildred Pierce
2011
Bert Pierce
Jimmy's Hall
2014
Commander O'Keefe