Milos or Melos is a volcanic Greek island in the Aegean Sea, just north of the Sea of Crete. Milos is the southwesternmost island in the Cyclades group.

The Venus de Milo (now in the Louvre) and the Asclepius of Milos (now in the British Museum) were both found on the island, as were a Poseidon and an archaic Apollo now in Athens. Milos is a popular tourist destination during the summer. The municipality of Milos also includes the uninhabited offshore islands of Antimilos and Akradies. The combined land area is 160.147 square kilometres (61.833 sq mi) and the 2011 census population was 4,977 inhabitants.

Bentonite, perlite, pozzolana and small quantities of kaolin are actively collected via strip mine or open-pit mine techniques in Milos and sold all over the world. In the past, baryte, sulphur, millstones and gypsum were also mined; in fact, Pliny notes that Milos was the most abundant source of sulfur in the ancient world. In ancient times the alum of Milos was reckoned next to that of Egypt. The Melian earth was employed as a pigment by ancient artists. Milos was a source of obsidian during the Neolithic ages for the Aegean and Mediterranean. Orange, olive, cypress, tamarisk, juniper (Juniperus oxycedrus) and arbutus trees grow throughout the island, which, however, is too dry to have any profusion of vegetation. Vines, cotton and barley are the main crops.