In Greek mythology, Ialmenus or Ialmenos (/aɪˈælmɪnəs/; Ancient Greek: Ἰάλμενος) was a son of Ares[1] and Astyoche, and twin brother of Ascalaphus.[2] Together with his brother he sailed with the Argonauts,[1] among the suitors of Helen,[3] and led the Orchomenian contingent in the Trojan War.[4]
Unlike Ascalaphus, Ialmenus survived the war. He was said to have ended up in Colchis, where he founded a colony, the inhabitants of which were later referred to as the "Achaeans of Pontus".[5]