In
Greek mythology,
Amythaon (; ,
gen.: Ἀμυθάονος) was a son of
Cretheus and
Tyro and brother of
Aeson and
Pheres. He dwelt at Pylos in
Messenia, and by Idomene, his niece, or by Aglaia became the father of
Bias,
Melampus, and Aeolia. His wife Idomene is sometimes said to be daughter of
Abas, king of Argos. According to
Pindar, he and several other members of his family went to
Iolcus to intercede with
Pelias on behalf of
Jason.
Pausanias mentions him among those to whom the restoration of the
Olympic Games was ascribed. A part of
Elis was thought to have been named Amythaonia after him.