
Acting
Born May 16, 1967 · Mullagh, County Cavan, Ireland
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.

Dead of Winter
2025

Conclave
2024

Twig
2024

The Wonder
2022

My Salinger Year
2020

Sergio
2020

Queen & Country
2015

Jimmy's Hall
2014

Medeas
2013

Gilded Lilys
2013

Brooklyn's Finest
2010

The International
2009

Before the Devil Knows You're Dead
2007

No Reservations
2007

Alexander Hamilton
2007

Bug
2007

The New World
2005

Million Dollar Baby
2004

The Blackwater Lightship
2004

Easy
2003

Intermission
2003

Mapmaker
2001

Bandits
2001

Disco Pigs
2001

The Grey Zone
2001

An Everlasting Piece
2000

The Fifth Province
1997

The Last Bus Home
1997

Avenue X
1993