Acting
46
Man
May 16, 1967 (57)
Mullagh, County Cavan, Ireland
Brían F. O'Byrne
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.
| Year | Movie / TV show / Other | Role |
|---|---|---|
| 2024 | Conclave | O'Malley |
| 2024 | Twig | Leon |
| — | The Fifth Province | Timmy |
| 2022 | The Wonder | John Flynn |
| 2020 | Sergio | Gil Loescher |
| 2020 | My Salinger Year | Hugh |
| 2020 | Lincoln Rhyme: Hunt for the Bone Collector | The Bone Collector |
| 2019 | Hatton Garden | Basil |
| 2018 | Nightflyers | Auggie |
| 2017 | Manhunt | Frank McAlpine |
| 2017 | Little Boy Blue | Steve Jones |
| 2015 | The Magicians | Mayakovsky |
| 2015 | Aquarius | Ken Karn |
| 2015 | The Bastard Executioner | Baron Ventris |
| 2015 | Queen & Country | RSM Digby |
| 2015 | Saints & Strangers | John Billington |
| 2014 | Jimmy's Hall | Commander O'Keefe |
| 2013 | Medeas | Ennis |
| 2013 | Gilded Lilys | Edwin Lily |
| 2011 | Mildred Pierce | Bert Pierce |
| 2011 | Prime Suspect | Reg Duffy |
| 2010 | Brooklyn's Finest | Det. Ronny Rosario |
| 2010 | Love/Hate | Inpector Mick Moynihan |
| 2009 | The International | The Consultant |
| 2009 | FlashForward | Aaron Stark |
| 2007 | Before the Devil Knows You're Dead | Bobby Lasorda |
| 2007 | No Reservations | Sean |
| 2007 | Bug | Dr. Sweet |
| 2007 | Alexander Hamilton | Alexander Hamilton |
| 2006 | Brotherhood | |
| 2005 | The New World | Lewes |
| 2004 | Million Dollar Baby | Father Horvak |
| 2004 | The Blackwater Lightship | Larry |
| 2003 | Intermission | Mick |
| 2003 | Easy | Mick McCabe |
| 2001 | Bandits | Darill Miller |
| 2001 | The Grey Zone | Interrogator |
| 2001 | Disco Pigs | Gerry |
| 2001 | Mapmaker | Richie Markey |
| 2000 | An Everlasting Piece | George |
| 1999 | Law & Order: Special Victims Unit | Liam Connors |
| 1998 | Amongst Women | Luke |
| 1997 | Oz | Padraic Connelly |
| 1997 | The Last Bus Home | Jessop |
| 1988 | American Experience | Alexander Hamilton |
| 1951 | Hallmark Hall of Fame | Larry |