The Société Notre-Dame de Montréal, otherwise known as the Société de Notre-Dame de Montréal pour la conversion des Sauvages de la Nouvelle-France, was a religious organisation responsible for founding Ville-Marie, the original name for the settlement that would later become Montreal. The original founders of the organization were Jérôme le Royer de la Dauversière, Jean-Jacques Olier and Pierre Chevrier. They were later joined by Paul Chomedey de Maisonneuve and Jeanne Mance. The organization's mission was to convert the Indigenous population to Christianity and found a Christian settlement, which would be later known as Ville-Marie.