Le Gardeur was a former town in southwestern Quebec, Canada that is now a district of the city of Repentigny. It was merged with Repentigny as part of the 2002 municipal reorganization in Quebec. It is on the L'Assomption River in the Regional County Municipality of L'Assomption, and connected to Montreal by Route 138, Autoroute 40, and Via Rail on the Canadian National rail line.