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.
1999 • TV
1988 • TV
2014 • TV
1997 • TV
2025 • Movie
2024 • Movie
as Tall Hunter
as O'Malley
as Father Horvak
as Det. Ronny Rosario
as Commander O'Keefe
as Dr. Sweet
as Interrogator
as Mick
as Leon
as Sean
as Darill Miller
as The Consultant
as Lewes
as Hugh
as Bobby Lasorda
as Gerry
as John Flynn
as Edwin Lily
as Ennis
as Gil Loescher
as Liam Connors
1 episodes
as Alexander Hamilton
1 episodes
as Sean Ramsey
8 episodes
as Padraic Connelly
1 episodes
as Mayakovsky
3 episodes
as Aaron Stark
22 episodes
as Frank McAlpine
8 episodes
as Walter Paxton
7 episodes
as Colin
1 episodes
as Auggie
10 episodes
as Bert Pierce
5 episodes
as The Bone Collector
10 episodes
as Inpector Mick Moynihan
12 episodes
as Ken Karn
13 episodes
as Baron Ventris
1 episodes
as Reg Duffy
13 episodes
as John Billington
2 episodes
as Basil
4 episodes
as Steve Jones
4 episodes
as Larry
1 episodes
