Saint-Jean-Baptiste Church is a Roman Catholic church in the borough of Le Plateau Mont-Royal in Montreal, Quebec, Canada. Its address is 4237 Henri-Julien Avenue (corner Rachel Street). It can accommodate 2,800 people, and is the largest church in Montreal after the Notre-Dame Basilica and Saint Joseph's Oratory.
The Church of St. Jean-Baptiste de Montreal is one of the few churches in Canada equipped with two organs. It can, therefore, promote the presentation of works that require an imposing organ accompaniment. Restored in 1995 and 1996, the great organ of the gallery, Opus 615 of Casavant Frères, is one of the most prestigious instruments in North America.