The rivière Jupiter is a watercourse flowing into Gulf of St. Lawrence, flowing in the municipality of L'Île-d'Anticosti, in the Minganie Regional County Municipality, in the administrative region of North Shore, in province of Quebec, in Canada. The Jupiter River is the most important waterway on Anticosti Island. This river has tourist attractions, in particular sport fishing for salmon, its striking landscapes in particular its canyon comprising a cliff reaching in places up to 100 m (330 ft) in height, the presence of thousands of deer and seals along the shores.