Antikythera (/ˌæntɪkɪˈθɪərə/ AN-tik-ih-THEER-ə, US also /ˌæntaɪkɪˈ-/ AN-ty-kih-; Modern Greek: Αντικύθηρα, romanized: Antikýthira, IPA: [andiˈciθira]) or Anticythera, known in antiquity as Aigilia (Αἰγιλία), is a Greek island lying on the edge of the Aegean Sea, between Crete and Peloponnese. Since the 2011 local government reform, it is part of the municipality of Kythira island.
Antikythera may also refer to the Kythira-Antikythira Strait, through which Mediterranean water enters the Sea of Crete.