Soulanges is a provincial electoral district in the Montérégie region of Quebec, Canada that elects members to the National Assembly of Quebec. It notably includes the municipalities of Saint-Lazare, Saint-Zotique and Rigaud. It was created for the 1867 election (and an electoral district of that name existed earlier in the Legislative Assembly of the Province of Canada). Its final election was in 1936, and its successor electoral district was Vaudreuil-Soulanges. It was re-created for the 2003 election from parts of Salaberry-Soulanges and Vaudreuil.