Gilles Duceppe (; born July 22, 1947) is a Canadian politician. He was leader of the Québec sovereignty movement and former leader of the Bloc Québécois. He was a Member of Parliament in the House of Commons of Canada for over 20 years and has been the leader of the sovereigntist Bloc Québécois for 15 years in three stints: 1996, 1997-2011 and in 2015.