Glenn Stewart (born 11 January 1984) is a former Australian professional rugby league footballer who last played for the Leigh Centurions in the Super League. An Australia international and New South Wales State of Origin representative second-row, he previously played for the Manly Warringah Sea Eagles and the South Sydney Rabbitohs in the NRL, winning the 2008 and 2011 premierships as well as the Clive Churchill Medal with the former.