In Greek mythology, Pirithous (/ˌpaɪˈrɪθoʊ.əs/; Greek: Πειρίθοος or Πειρίθους; also transliterated as Perithous) was the King of the Lapiths in Thessaly and husband of Hippodamia, at whose wedding the famous Battle of Lapiths and Centaurs occurred; as well as the close friend of the hero Theseus.