James O'Donoghue (born 5 February 2004) is an Irish-American actor. He began his career appearing in the Irish television series Fair City (2012). He is best known for his role as the troubled teenager Calum Dwyer in the BBC drama Smother, as well as Luka Otis in AMC and Sundance Now's supernatural thriller Sanctuary: A Witch's Tale (2025). More recently, O'Donoghue gained further international recognition after being cast as Joey Lynch in Prime Video's highly anticipated series adaptation of Boys of Tommen.