LaFontaine is a provincial electoral district in Montreal, Quebec, Canada that elects members to the National Assembly of Quebec. It consists of the neighbourhood of Rivière-des-Prairies in the borough of Rivière-des-Prairies–Pointe-aux-Trembles. It was created for the 1966 election from a part of Bourget electoral district. In the change from the 2001 to the 2011 electoral map, its territory was unchanged. From 1992 to 2001, the riding also included the northern half of Pointe-aux-Trembles. It was named after the First Prime Minister of the United Province of Canada, Louis-Hippolyte Lafontaine.

Members of the Legislative Assembly / National Assembly

Election results

• Result compared to Action démocratique