The International Balloon Festival of Saint-Jean-sur-Richelieu is the largest hot air balloon festival in Canada. It is held each August in Saint-Jean-sur-Richelieu, Quebec, about 40 minutes southeast of Montreal and about halfway between Montreal and Vermont.

The festival is situated at the Saint-Jean Airport and weather permitting (no storm activity detected within range, 50 km (31 mi), and winds above 12 km/h (7.5 mph)), there are two flight launches each day: a morning flight at 6:00 am and an evening flight between 6:00 and 7:00 pm. Other festival activities include amusement rides, musical and comedy shows and "Nuits magiques" (tethered night flights).

This festival went on hiatus in 2020, but returned in 2022.^[1] The 2023 edition, which was also the 40th edition in the festival's history, was held from August 11-13 and August 17-20, 2023.^[2] The 2024 edition will be held from August 9-11 and August 15-18, 2024.^[3]