Troina (Sicilian: Traina) is a comune (municipality) in the province of Enna, in the Italian region of Sicily.

[3] Excavations have proved that the area of Troina was settled as early as the 7th millennium BC (a farm dating from that period, and a later necropolis).

After the fall of the Western Roman Empire it was a Byzantine stronghold and during the Islamic period the religious and moral capital of the Greek and Christian Orthodox part of Sicily; Roger I of Sicily had in its castle (which he captured in 1061) also a start base of his conquest of the island.

During World War II, Troina was the site of a battle between the Allies and the Axis forces.

In 2021 the town began selling homes for as little as one euro in an effort to lure residents and increase the population size.