Moved back to Ireland in 2009 with his wife and two kids, daughter Berry and son Joe. Now lives in Kerry, Ireland. .
Was nominated for Broadway's 2004 Tony Award as Best Actor (Featured Role - Play) for a revival of Harold Pinter's "The Caretaker."
Echoing his earlier work 14 years previous in John Michael McDonagh's short film "Second Death", Aiden Gillen repeats his exaggerated and threatening karate-moves in a similar bar scene toward Brendan Gleeson in Calvary - also by John Michael McDonagh.
Mother is a nurse and his late father was an architect.
Brother of actress Fionnuala Murphy.