The Arboretum des Milelli is an arboretum located on the 12-hectare grounds of Les Milelli, outside Ajaccio, Corse-du-Sud, Corsica, France. Les Milelli was the long-time summer retreat of the ancestors of Napoleon I of France, and one of his childhood residences; its olive groves provided a large part of the family's income. The house itself is closed to visitors, but its grounds and arboretum are open. The arboretum contains woody plants representative of Mediterranean flora; an admission fee is charged. The name I milelli means " the little apple trees " in Corsican language.