The Diocese of Polignano or Diocese of Polinianum (Latin: Dioecesis Polinianensis) was a Roman Catholic diocese located in the town of Polignano in the province of Bari, Apulia, southern Italy, located on the Adriatic Sea. In 1818, it was suppressed to the Diocese of Monopoli. It was restored as a Titular Episcopal See in 1968.
Erected: 7th Century
Latin Name: Polinianensis
Metropolitan: Archdiocese of Bari-Canosa
Suppressed: 1818 to the Diocese of Monopoli