Molène or Molene is an island in the Atlantic off the west coast of Brittany in northwestern France. It is the largest of Molène or Molene Archipelago, a group of about 20 islands in the Ponant Isles. an archipelago of twenty islands. It is the seat of Île-Molène, a commune in Saint-Renan Canton, Brest Arrondissement, Finistère Department.