Arrhichion (also spelled Arrhachion, Arrichion or Arrachion) of Phigalia (Greek: Αρριχίων ο Φιγαλεύς) (died 564 BC) was a champion pankratiast in the ancient Olympic Games. He died while successfully defending his championship in the pankration at the 54th Olympiad (564 BC).[1][2] Arrhichion has been described as "the most famous of all pankratiasts".[3]