The Diocese of Ostuni (Latin: Dioecesis Ostunensis) was a Roman Catholic diocese located in the town of Ostuni in the province of Brindisi in the Apulia region of southern Italy. In 1821, it was suppressed to the Archdiocese of Brindisi.
Erected: 11th Century
Latin Name: Ostunensis
Metropolitan: Archdiocese of Brindisi
14 May 1821: Suppressed to the Archdiocese of Brindisi