DOB: May 16, 1967
Background: O'Byrne is an Irish actor born in Mullagh, County Cavan. He is mainly known for his theatre work on Broadway but has also had success in television and films.
Filmography: He had his first major Broadway success and his first Tony Award nomination for the Martin McDonagh play "The Beauty Queen of Leenane" in 1996. He followed with other acclaimed stage performances in "The Lonesome West," "Doubt," and "The Coast of Utopia," which all resulted in additional Tony nominations. He won a Tony Award for his role as a serial killer in "Frozen" in 1998. Film roles have included "Bandits," "Million Dollar Baby," "Before the Devil Knows You're Dead," "No Reservations," "The International," and "Brooklyn's Finest." His television work has included "The Blackwater Lightship," "Law and Order: Special Victims Unit," "FlashForward," and his Emmy Award-nominated role in the HBO miniseries "Mildred Pierce" starring Kate Winslet and directed by Todd Haynes.
Best TV Movie/Miniseries Supporting Actor Nomination
"Mildred Pierce" (2011); lost to Guy Pearce ("Mildred Pierce")
Tony Awards: Win - Best Featured Actor in a Play ("Frozen," 2004)
Best Actor in a Play Nominations
"The Coast of Utopia" (2007); lost to Frank Langella ("Frost/Nixon")
"Doubt" (2005); lost to Bill Irwin ("Who's Afraid of Virginia Woolf?")
"The Lonesome West" (1999); lost to Brian Dennehy ("Death of a Salesman")
Best Featured Actor in a Play Nominations
"The Beauty Queen of Leenane" (1998); lost to Tom Murphy ("The Beauty Queen of Leenane")
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