Pronax (Ancient Greek: Πρόναξ / Πρῶναξ) is a son of Talaus and Lysimache in the Biantid house at Argos, brother of Adrastus and Eriphyle. He is father of Amphithea — whom Adrastus married — and of Lycurgus. Some accounts say he died before the Seven against Thebes and that the Nemean Games were instituted in his honor.
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I.Biantid prince at Argos
Apollodorus counts Pronax among the children Talaus begot on Lysimache, with Adrastus, Mecisteus, Aristomachus, and Eriphyle. Of Pronax he records a son Lycurgus; of Adrastus, that he married Amphithea daughter of Pronax — so the Argive king wed his brother's daughter and the Theban war was bound into one kindred.
Athenaeus preserves a notice from the tragedian Agathon on the extravagant clothing of those who came to court Amphithea. She and Adrastus had Argia, Deipyle, Aegialia, Aegialeus, and Cyanippus.
II.Lycurgus and the Seven
Pronax's son Lycurgus is sometimes identified with the Nemean Lycurgus father of Opheltes, though Apollodorus distinguishes that Opheltes' father as son of Pheres. Pausanias reports an image of Pronax's son Lycurgus on the Amyclae throne of Apollo: Adrastus and Tydeus stop a fight between Lycurgus and Amphiaraus — a quarrel remembered on the road to Thebes.
Some later notices say Pronax himself died before the war of the Seven and that the Nemean Games were founded in his honor; the Opheltes tradition more commonly anchors those games on the death of the child at Nemea.