Louis Walsh is an Irish entertainment manager and former judge on lung-running talent show, The X Factor.

Louis was manager with the successful Irish boy-band, Boyzone (from 1993 to 2008) as well as their "successors", Westlife (from 1998 to 2012), along with former members Ronan Keating, Shane Filan and many X Factor (and "Popstars") acts, including Girls Aloud, Jedward, Shayne Ward and Union J.