| Montréal | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montréal (Aude).svg |
| Arrondissement: | Carcassonne |
| Canton: | La Malepère à la Montagne Noire |
| Insee: | 11254 |
| Postal Code: | 11290 |
| Mayor: | Bernard Breil[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.2°N 2.15°W |
| Elevation Min M: | 117 |
| Elevation Max M: | 443 |
| Area Km2: | 55.21 |
Montréal (in French pronounced as /mɔ̃ʁe.al/; Languedocien: Montreal) is a commune just west of Carcassonne in the Aude department, a part of the ancient Languedoc province and the present-day Occitanie region in southern France.
In 1206 Montréal was the site of debates between Catholics and Cathars, a sect of Christianity whose beliefs ran contrary to the teachings of the Catholic Church. These debates were initiated by a Spanish bishop Diego of Osma and his canon, the future Saint Dominic, as part of Pope Innocent III's program to convert the Cathars in the area to Catholicism.