Ithaca (/ˈɪθəkə/; Greek: Ιθάκη, Ithakē) was, in Greek mythology, the island home of the hero Odysseus. The specific location of the island, as it was described in Homer's Odyssey, is a matter for debate. There have been various theories about its location. Modern Ithaca has traditionally been accepted to be Homer's island.
The central characters of the epic, such as Odysseus, Achilles, Agamemnon and Hector, are traditionally considered fictional figures from folklore, but aspects of the Homeric story may have some basis in actual historical events or people. This, and the extremely detailed geographic descriptions in the epic itself, have invited investigation of the possibility that Homer's heroes might have existed and that the location of the sites described therein might be found.