Leontini (lēəntī´nī), ancient city, E Sicily, c.20 mi (32 km) S of Catania. It was (729 BC) a colony of Chalcidians from the island of Naxos and passed (5th cent. BC) under the rule of Syracuse. It was the legendary home of the Laestrygones, a group of giants encountered by Odysseus. The modern town occupying the site is Lentini.