Petite-Île (French: Little Isle) is a commune on the French island and department of Réunion. The commune is bordered by the communes of Saint-Joseph to the east and Saint-Pierre to the west. The commune gets its name from the uninhabited islet off of its coast, the only such islet near Réunion that has vegetation. The commune was established in 1935.
The main economy in the commune is agriculture-based, with cane sugar plantations, along with fruit and vegetable farming.