Battus III. was from 550 to 530 BC a king of Cyrene.

He followed his father Arcesilaus II who was killed. He was supported by his mothed. With the help of Demonax from Mantinea it was possible to bring some order in Cyrene.

Arcesilaus III was the next king of Cyrene

Herodotus, Histories, Book 4:

Battus, Arcesilaus’ son, succeeded to the kingdom, a lame man, who limped in his walk. Their late calamities now induced the Cyrenaeans to send to Delphi and inquire of the god what form of government they had best set up to secure themselves prosperity. The Pythoness answered by recommending them to fetch an arbitrator from Mantinea in Arcadia. Accordingly they sent; and the Mantineans gave them a man named Demonax, a person of high repute among the citizens; who, on his arrival at Cyrene, having first made himself acquainted with all the circumstances, proceeded to enrol the people in three tribes. One he made to consist of the Theraeans and their vassals; another of the Peloponnesians and Cretans; and a third of the various islanders. Besides this, he deprived the king Battus of his former privileges, only reserving for him certain sacred lands and offices; while, with respect to the powers which had hitherto been exercised by the king, he gave them all into the hands of the people.