The Aegimius (Ancient Greek: Αἰγίμιος, Aigimios) is a fragmentary Ancient Greek epic poem that was variously attributed to Hesiod or Cercops of Miletus during antiquity. The "Aegimius" of the title was surely the son of Dorus, but the surviving fragments have nothing to do directly with this figure, and, despite his status as title character, it cannot be inferred from the available evidence that the poem was primarily concerned with the Dorian king. Instead other myths, such as those concerning Io, Theseus, and the golden fleece, are found among the handful of fragments preserved in other ancient authors as quotations and paraphrases.
Next to nothing is known of poem's overarching plot or structure aside from the fact that it was at least two books in length: Stephanus of Byzantium and the scholia to Apollonius of Rhodes preserve fragments which they assign to "the second book of the Aegimius". One of the fragments cited for book 2 relates the gruesome story that Thetis cast numerous of her children by Peleus into a cauldron of boiling water to see whether they were mortal, before her husband intervened in the case of Achilles. Other isolated fragments concern the Graeae (fr. 295), Nauplius (fr. 297), Phrixus (fr. 299) and a rare Greek word for a "cool shady place" (ψυκτήριον, psyktērion) found in a context-less hexamter quoted by Athenaeus (Deipnosophistae 11.109.503c–d = fr. 301):