In Greek mythology Axius (Ancient Greek: Ἀξιός, romanized: Axios, lit. 'worthy', 'deserving' or 'of value') is a Paeonian river god, the son of Oceanus and Tethys. He was the father of Pelagon, by Periboea, daughter of Acessamenus.
“straight into the midst where men thronged the thickest, even by the stern of the ship of great-souled Protesilaus, and smote Pyraechmes, that had led the Paeonians, lords of chariots, out of Amydon, from the wide-flowing Axius. Him he smote on the right shoulder,”
leading the Paeonians with their long spears, and this is now my eleventh morn, since I came to Ilios. But my lineage is from wide-flowing Axius—Axius, the water whereof flows the fairest over the face of the earth—who begat Pelegon famed for his spear, and he, men say,