Dermot Mulroney (born October 31, 1963) is an American actor.
Most of his lead performances have been in romantic comedy films. Mulroney has appeared in many movies, including as the male lead in My Best Friend's Wedding alongside Julia Roberts and Cameron Diaz. He is probably best known for his western roles as either an outlaw or gunman. Mulroney co-starred in the 1988 western Young Guns, for which he is possibly best known, in which he played "Dirty Steve" alongside Emilio Estevez, and in 1994 he starred alongside Mickey Rourke in The Last Outlaw, which has since become Read his whole biography