Bari is the capital city of the Metropolitan City of Bari and of the Apulia region, on the Adriatic Sea, southern Italy. It is the second most important economic centre of mainland Southern Italy after Naples. It is a port and university city, as well as the city of Saint Nicholas. The city itself has a population of 315,284 inhabitants, and an area of over 116 square kilometres (45 sq mi), while the urban area has 750,000 inhabitants. The metropolitan area has 1.3 million inhabitants.

The Archdiocese of Bari-Bitonto is Metropolitan Latin archdiocese of the Catholic Church in the administrative Bari province, Puglia (Apulia) region, southeastern Italy, created in 1986, when the historical diocese of Bitonto was subsumed in the Archdiocese of Bari.