Gagliano Castelferrato () is a town and comune (municipality) in the province of Enna in the autonomous island region of Sicily in Italy. It has 3,111 inhabitants.

The town was the site of the Battle of Gagliano in 1300 during the War of the Sicilian Vespers.Stanton, Charles D. “LAURIA’S LAST GREAT CAMPAIGN (SUMMER 1299–SPRING 1300).” In Roger of Lauria (c.1250-1305): “Admiral of Admirals,” NED-New edition., 271–88. Boydell & Brewer, 2019. .

Demographics As of 2026, the population is 3,111, of which 48.3% are male, and 51.7% are female. Minors make up 13.1% of the population, and seniors make up 29.3%.

Immigration As of 2025, immigrants make up 3.7% of the total population. The 5 largest foreign countries of birth are Germany, Romania, United States, Brazil, and Lithuania.

References