Chieti (kyĕˈtē) [key], city (1991 pop. 55,876), capital of Chieti prov., Abruzzi region, central Italy, on the Pescara River, near the Adriatic Sea. It is a commercial and industrial center. Manufactures include textiles, clothing, fabricated metals, and construction materials. The city occupies the site of the Roman Teate Marrucinorum, of which ruins remain. Chieti was in the duchy of Benevento (7th cent.), fell to the Normans (1078), and thereafter was in the kingdom of Naples. It has a fine Romanesque cathedral (11th cent.), a 14th-century tower, and a university. The order of the Theatine Brothers (founded 1524) takes its name from the ancient Roman town.