In Greek mythology, Idmon (Ancient Greek: Ἴδμων means "having knowledge of") was an Argonaut seer.
Allegedly a son of Apollo, he had Abas (or Ampycus) as his mortal father.[1] His mother was Asteria, daughter of Coronus, or Cyrene, or else Antianeira, daughter of Pheres. By Laothoe he had a son Thestor.[2][3]
| Relation | Names | Sources | ||||
|---|---|---|---|---|---|---|
| Pherecydes | Apollonius | Hyginus | Orphic | Schol. ad Apollon. | ||
| Parentage | Apollo and Asteria | ✓ | ✓ | |||
| Apollo | ✓ | |||||
| Abas | ✓ | |||||
| Apollo and Cyrene | ✓ | |||||
| Abas and Cyrene | ✓ | |||||
| Apollo and Antianeira | ✓ | |||||
| Spouse | Laothoe | ✓ | ||||
| Offspring | Thestor | ✓ | ||||
Idmon foresaw his own death in the Argonaut expedition, but joined anyway. During the outbound voyage of Argo, a boar killed him in the land of the Mariandyni, in Bithynia.[2][4][5]
In 559 BC, the citizens of Megara Heraclea (today's Eregli) built a temple over Idmon's grave.