The Dumoulin Islands are a small group of rocky islands in the Antarctic region at the northeast end of the Géologie Archipelago, 4.6 kilometres (2.5 nmi) north of Astrolabe Glacier Tongue. On 22 January 1840, a French Antarctic expedition led by Captain Jules Dumont d'Urville, aboard his flagship Astrolabe, landed a party on one of these islands, Rocher du Débarquement. Dumont d'Urville named the group of islands in honor of the hydrographer of his expedition, Clément Adrien Vincendon-Dumoulin.