Amorgos is the easternmost island of the Cyclades island group and the nearest island to the neighboring Dodecanese island group in Greece. Along with 16 neighboring islets, the largest of which is Nikouria Island, it comprises the municipality of Amorgos, which has a land area of 126.346 square kilometres and at the 2021 census had a population of 1,961.

The Cyclades are an island group in the Aegean Sea, southeast of mainland Greece and a former administrative prefecture of Greece. They are one of the island groups which constitute the Aegean archipelago. The name refers to the archipelago forming a circle around the sacred island of Delos. The largest island of the Cyclades is Naxos, however the most populated is Syros.