The Basilica of San Tommaso Apostolo ("St. Thomas the Apostle"), also Ortona Cathedral (Italian: Basilica-Concattedrale di San Tommaso Apostolo; Duomo d'Ortona), is a Roman Catholic cathedral and minor basilica in Ortona, Abruzzo, Italy, famous for holding the relics of Saint Thomas the Apostle.

[1] The Basilica was built on the site of an ancient Roman temple.

[2] Destroyed by the Normans in 1060, it was rebuilt and dedicated to Santa Maria degli Angeli in 1127.

The cathedral has suffered damage from military attacks by the Ottomans in 1566, the French in 1799 and from fighting during the Battle of Ortona in 1943.

This article about a Roman Catholic church building in Italy is a stub.