Contrecœur (French pronunciation: [kɔ̃tʁəkœʁ]) is a city in southwestern Quebec, Canada on the south shore of the St. Lawrence River.

Contrecœur is approximately 45 kilometres (28 mi) northeast of Montreal and is accessible via Autoroute 30, the main road from the southwest, which continues on to Sorel-Tracy.

In 1672, Antoine Pécaudy de Contrecœur, a soldier of the Carignan-Salières Regiment, originally from Saint-Chef, Isère, France, was granted a seigneury by King Louis XIV.

A migratory bird sanctuary is located near the town on Contrecœur Island.

[6] The Contrecoeur-West and Contrecoeur-East were administratively merged into ArcelorMittal Long Products Canada.