Anaxibius

thumb|upright=2|Route of Xenophon and the Ten Thousand (red line) in the [[Achaemenid Empire. The satrapy of Cyrus the Younger is delineated in green. Anaxibius shipped the Ten Thousand of Xenophon from Chrysopolis to Byzantium.]] Anaxibius (), was the Spartan admiral stationed at Byzantium in 400 BC, to whom the Greek troops of Cyrus the Younger, on their arrival at Trapezus on the Euxine, sent their general, Cheirisophus, to obtain a sufficient number of ships to transport them to Europe.

However, when Cheirisophus met them again at Sinope, he brought back nothing from Anaxibius but civil words and a promise of employment and pay as soon as they came out of the Euxine. On their arrival at Chrysopolis, on the Asiatic shore of the Bosporus, Anaxibius, being bribed by Pharnabazus with great promises to withdraw them from his satrapy, again engaged to furnish them with pay, and brought them over to Byzantium. Here he attempted to get rid of them, and to send them forward on their march without fulfilling his agreement. A fight ensued, in which Anaxibius was compelled to flee for refuge to the Acropolis, and which was quelled only by the remonstrances of Xenophon.