Liam William Peter Miller (13 February 1981 – 9 February 2018) was an Irish professional footballer. Miller began his career with Celtic and was later loaned to Aarhus in 2001. He returned to Celtic Park and broke into the first-team squad during the 2003–04 season. Rejecting the offer of a new contract from Celtic, he joined Manchester United in 2004 on a free transfer under the Bosman ruling. Loaned to Leeds United during the 2005–06 season, Miller made 22 first-team appearances for Manchester United.