Heracleides of Syracuse, son of Lysimachus, was one of the three generals appointed by the Syracusans, after the first defeat they suffered from the Athenians on their arrival in Sicily, 415 BC. His colleagues were Hermocrates and Sicanus, and they were invested with full powers, the late defeat being justly ascribed by Hermocrates to the too great number of the generals, and their want of sufficient control over their troops. (Thuc. vi. 73; Diod. xiii. 4.) They were deposed from their command in the following summer, on account of their failure in preventing the progress of the Athenian works. Of the three generals appointed in their place, one was also named Heracleides. (Thuc. vi. 103.)