In Greek mythology, Arcesilaus was one of the Greek leaders in the Trojan War, from Boeotia, commander of ten ships. He was son of Areilycus and Theobule, and brother of Prothoenor. In one source though, he is called a son of Alector and Cleobule, and thus half-brother to Leitus and Clonius. He was killed by Hector. Leitus brought his remains back to Boeotia and buried them near Lebadea, on the banks of River Hercyna.