Montreal East (in French: Montréal-Est), is an on-island suburb in southwestern Quebec, Canada on the island of Montreal, formerly part of the borough of Rivière-des-Prairies–Pointe-aux-Trembles–Montréal-Est. Montreal-Est has consistently been home to many large oil refineries since 1915.
Montreal-Est was originally founded in 1910 by businessman Joseph Versailles. On January 1, 2002, as part of the 2002–2006 municipal reorganization of Montreal, it was merged into the City of Montreal and became part of the borough of Rivière-des-Prairies–Pointe-aux-Trembles–Montréal-Est. After a change of government and a 2004 referendum, it was the only community in the eastern half of the Island of Montreal that de-merged, and it was re-constituted as a city on January 1, 2006.