Glaros (Γλάρος, "seagull") or Glaronisi (Γλαρονήσι) is an island that belongs to the Lesser Cyclades. It lies approximately 0.6 nautical miles (1.1 km) south of Koufonisi and is only about five hundred metres east of Kato Koufonisi. Glaros is extremely small, flat, uninhabited and nearly barren.