This is a list of the leaders of the opposition party at the Montreal City Hall. Party colours do not indicate affiliation or resemblance to a provincial or a federal party.
^Prégent crossed the floor to sit as an Independent in 1988.
^Auf der Maur crossed the floor and joined the Parti Municipal in 1989.
^During the summer of 1994, Jérôme Choquette's Parti des Montréalais (Montrealers’ Party) absorbs the Parti Civique de Montréal (Civic Party of Montreal).
^Lavallée crossed the floor to sit as an Independent in 1997.
^Daviau crossed the floor to sit as an Independent in 1998.
^Martin Lemay served as Acting Leader of Vision Montreal and as Acting Leader of the Opposition, when Pierre Bourque unsuccessfully ran as an ADQ candidate for a seat to the provincial legislature.
^Following the resignation of Pierre Bourque, François Purcell (district of Saint-Édouard) was selected as Acting Leader of Vision Montreal; Noushig Eloyan, as Acting Leader of the Opposition.
^Catherine Solyom, "Where's the proof? Harel demands; Payoff rumours. She points to mayor as source of reports," Montreal Gazette, 18 October 2009, A1.
