The Rivière Saint-Denis is a river on the Indian Ocean island of Réunion. It enters the sea close to the island's northernmost point after flowing through the Plaine des Chicots – Plaine d'Affouches Important Bird Area and then the capital, Saint-Denis.
Coordinates: 20°52′31″S 55°26′37″E / 20.87528°S 55.44361°E