Callippus (/kəˈlɪp.əs/; Ancient Greek: Κάλλιππος Συρακούσιος) was a tyrant of Syracuse, Magna Graecia, who ruled briefly for thirteen months[1] from 354 to 352 BC.
The army marched into Syracuse with 800 mercenaries and took control of the city, disposing of the previous tyrant, Dion’s nephew Dionysius II.
Arete and Aristomache further inquired about the plot against Dion, and when Callippus discovered their inquisitiveness, he approached them and told them that he was loyal, and that he would prove his loyalty.
But due to his rising unpopularity, Callippus did not have Dion's son killed, despite the danger he posed.
According to Plutarch,[2] Callippus does lose control of the city while he is absent, on an expedition to conquer Catana.
With his remaining troops he wandered around Sicily, but finding himself unable to support himself he traveled to Italy.