Portrait of Brían F. O'Byrne

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 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.

Born: May 16, 1967

Place of Birth: Mullagh, County Cavan, Ireland

Filmography

2025
The Abandons

as Walter Paxton

2025
Dead of Winter

as Tall Hunter

2024
Conclave

as O'Malley

2024
Twig

as Leon

2022
The Wonder

as John Flynn

2020
2020
Sergio

as Gil Loescher

2019
2018
Nightflyers

as Auggie

2017
Manhunt

as Frank McAlpine

2017
Little Boy Blue

as Steve Jones

2015
The Magicians

as Mayakovsky

2015
Saints & Strangers

as John Billington

2015
The Bastard Executioner

as Baron Ventris

2015
Aquarius

as Ken Karn

2014
Queen & Country

as RSM Digby

2014
The Last Ship

as Sean Ramsey

2014
Jimmy's Hall

as Commander O'Keefe

2013
Medeas

as Ennis

2013
Gilded Lilys

as Edwin Lily

2011
Prime Suspect

as Reg Duffy

2011
Mildred Pierce

as Bert Pierce

2010
Love/Hate

as Inpector Mick Moynihan

2010
Brooklyn's Finest

as Det. Ronny Rosario

2009
FlashForward

as Aaron Stark

2009
The International

as The Consultant

2007
2007
Alexander Hamilton

as Alexander Hamilton

2007
Bug

as Dr. Sweet

2006
Brotherhood

as Colin

2005
2004
Million Dollar Baby

as Father Horvak

2003
Easy

as Mick McCabe

2003
2001
Mapmaker

as Richie Markey

2001
Bandits

as Darill Miller

2001
Disco Pigs

as Gerry

2001
The Grey Zone

as Interrogator

1998
1997
1997
1997
Oz

as Padraic Connelly

1988
American Experience

as Alexander Hamilton