Saint-Jean-Baptiste () is a municipality in the Montérégie region of Quebec, a Canadian province. The population as of the Canada 2021 Census was 3,179. It is located within La Vallée-du-Richelieu Regional County Municipality in a valley between Mont Saint-Hilaire and Mont Rougemont.
On November 4, 1998 it moved from Rouville Regional County Municipality to La Vallée-du-Richelieu Regional County Municipality.
Population trend:
Mother tongue language (2021)
The South Shore Protestant Regional School Board previously served the municipality.