Achilles on Skyros is an episode in the myth of Achilles, a Greek hero of the Trojan War. Not existing in Homer's epic poem Iliad, the episode is written down in detail in some later versions of the story, particularly the Achilleid by the Roman poet Statius. The story of how Achilles disguised himself as a girl at the court of the king of Skyros, fell in love with one of the princesses, and married her before leaving for Troy, became a popular topic in arts and literature from Classical times until the middle of the 20th century. The carnivalesque disguises and gender transpositions at the heart of the story were particularly popular in opera, with over 30 different operas on the theme between 1641 and 1857.