Robert Keith Bennett Doyle (born 20 May 1953) is an Australian politician who was the 103rd Lord Mayor of Melbourne, elected on 30 November 2008 until he resigned on 4 February 2018 amidst allegations of sexual harassment. He was previously Member for Malvern in the Legislative Assembly of Victoria from 1992 to 2006 and Leader of the Victorian Opposition from 2002 to 2006, representing the Liberal Party.