Ensemble Montréal is a municipal political party in Montreal, Quebec, Canada. Its 31 elected officials are present in many districts in Montreal and represent the boroughs of Montréal-Nord (mayor, Christine Black), Saint-Léonard (mayor, Michel Bissonnet), Saint-Laurent (mayor, Alan DeSousa) and Pierrefonds-Roxboro (mayor, Dimitrios (Jim) Beis). Since November 5, 2017, Lionel Perez is the interim leader and the 19 elected officials who sit on the Montreal City Council form the Official Opposition.