Saint-Jean-Baptiste (French pronunciation: [sɛ̃ ʒɑ̃ batist] ⓘ) is a municipality in the Montérégie region of Quebec, a Canadian province.

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:[5] Mother tongue language (2021)[6]

The South Shore Protestant Regional School Board previously served the municipality.