Has a son, Jack Daniel, born 1989; and a daughter, Romy Marion, born 1992.
Started acting at the age of 29 and he went to America for the first time when he was 37.
Before becoming an actor, he was an archaelogist, a schoolteacher, a short-order cook, and a bullfighter.
In a November 1999 interview with the New York Post, he claimed to have been molested by his Latin teacher while at an English seminary preparing for priesthood.
He went from a priest in Stigmata (1999) to Satan in End of Days (1999).
Educated by the Christian Brothers in Dublin.
Autobiography titled "Pictures in My Head"
Was nominated for Broadway's 2000 Tony Award as Best Actor (Play) for a revival of Eugene O'Neill's "A Moon for the Misbegotten."
Although he separated from Ellen Barkin in 1993, he did not file for divorce until May 1999.
Has appeared in 3 roles romantically opposite Laura Linney, "A Simple Twist of Fate," "P.S." and "Jindabyne.".
Older brother of Donal, Thomas, Breda, Margaret and Marian (deceased).
Son of Dan Byrne and Eileen Gannon.
He has Irish citizenship and resident alien status in the United States.
He's a patron of The West of Ireland Cardiology Foundation, Croi, since 1997.
He was a football played with the Stella Maris Football Club in Drumcondra, Dublin.
Speaks English and Gaeilge (Irish Gaelic).
Learned to speak Gaelic in college and still speaks it fluently.
Cites Federico Fellini's Amarcord (1973) as one of his all-time favorite movies.
In Live From Lincoln Center: Camelot (2008) Gabriel Byrne plays King Arthur. In Excalibur (1981) he plays Arthur's father, Uther Pendragon.
Didn't start acting until he was twenty-nine years old.
Not a relation of Rose Byrne.
He has acted in films with all three actors who played Superman's arch enemy Lex Luthor in live-action films: Gene Hackman in Enemy Of The State (1998), Kevin Spacey in The Usual Suspects (1995) and Jesse Eisenberg in Louder Than Bombs (2015).
As of 2018, has never appeared in a film nominated for the the Best Picture Oscar.