Alonnisos (Greek:Αλόννησος), also transliterated as Alonissos or Alonisos, is a Greek island in the Aegean Sea. After Skiathos and Skopelos it is the third member of the Northern Sporades. It is 3 km (2 mi) (2 nm) E of the island of Skopelos. Alonnisos is also the name of a village on the island, as well as the municipality that encompasses the island and the village.