The League of the Islanders (Ancient Greek: τὸ κοινὸν τῶν νησιωτῶν, romanized: to koinon tōn nēsiōtōn) or Nesiotic League was a federal league (koinon) of ancient Greek city-states encompassing the Cyclades islands in the Aegean Sea. Organized under the auspices of Antigonus Monophthalmus in c. 314/3 BC, it remained under Antigonid control until c. 287 BC. It then passed under the aegis of the Ptolemaic Kingdom until Ptolemaic control over the central Aegean collapsed and the League was dissolved sometime in the mid-3rd century BC. The Cycladic islands reverted to independence, except for a few that passed under Macedonian control. The league was re-established ("Second Nesiotic League") under the leadership of Rhodes in c. 200 BC, and survived until c. 167 BC.
