Denis Trottier (born June 8, 1952 in Dolbeau-Mistassini, Quebec) is a Quebec politician and teacher. He was previously a Member of National Assembly of Quebec for the riding of Roberval in the Saguenay-Lac-Saint-Jean region, losing to Premier Philippe Couillard in the 2014 general election. He represented the Parti Québécois.Trottier went to Université Laval where he received a bachelor's degree in political science and a certificate in college education.