What is the name of Calypso's island?

Calypso’s island is called Ogygia. In Book 5 of Homer’s Odyssey, the nymph Calypso keeps the shipwrecked Odysseus there while he longs to return to Ithaca.

Odysseus remains on Ogygia for seven years. Athena brings his plight to Zeus, who sends Hermes to order Calypso to release him. Calypso reluctantly helps him build a raft, supplies provisions, and allows him to depart.

Ogygia is often confused with other islands in the Odyssey. Aeaea is Circe’s island, Thrinacia is where Helios’s sacred cattle graze, and Scheria is the land of the Phaeacians, who eventually help Odysseus reach Ithaca.

Homer does not provide a location that can be identified with certainty on a modern map. Later traditions have proposed Gozo, Othonoi, and other places, but those geographical theories do not change the island’s canonical name: Ogygia.