The Roman Catholic Diocese of Osimo was an ancient diocese in Italy. It was founded in the seventh century and in 1725 merged with the Diocese of Cingoli to form the Diocese of Osimo e Cingoli. It was contained within the Papal States.
The Diocese of Almería is a Latin Church diocese of the Catholic Church located in the city of Almería in the ecclesiastical province of Granada in Spain.
The Diocese of Sigüenza-Guadalajara is a Latin Church diocese of the Catholic Church located in the cities of Sigüenza and Guadalajara, Spain in the ecclesiastical province of Toledo in Spain. It is in the located in the secular Spanish province of Guadalajara in Castile, central Spain. It is bounded on the north by Soria, on the east by Zaragoza and Teruel, on the south by Cuenca and on the west by Guadalajara and Segovia.
The Diocese of Zamora is a Latin diocese of the Catholic Church in the city of Zamora in the ecclesiastical province of Valladolid in Spain.
The Roman Catholic Diocese of Santorini is a diocese of the Catholic Church located in the city of Santorini in the ecclesiastical province of Naxos, Andros, Tinos and Mykonos in Greece.
The Italian Catholic Diocese of Amelia, existed from the fifth century until 1983. In that year it was united into the new diocese of Terni, Narni, e Amelia. It was a suffragan of the archdiocese of Spoleto.
The former Italian Catholic Diocese of Città della Pieve, in Umbria, existed until 1986. In that year it was united into the Archdiocese of Perugia-Città della Pieve.
The former Italian Catholic diocese of Bisignano, in Calabria, existed from the eighth century until 1818. In that year it was united with the diocese of San Marco, to create the diocese of San Marco e Bisignano. More recently, Bisignano passed to the archdiocese of Cosenza-Bisignano.
The former Italian Catholic Diocese of Sant'Angelo dei Lombardi-Bisaccia, in the Province of Avellino, Southern Italy, existed until 1921, when it was united into the Archdiocese of Conza-Campagna to form the Archdiocese of Conza-Sant'Angelo dei Lombardi-Bisaccia.
The Italian Catholic diocese of Bitonto, in Apulia, had a short independent existence from 1982 to 1986. In the latter year it was united into the Archdiocese of Bari, forming the Archdiocese of Bari-Bitonto. Before 1982, it had existed since the 9th century until being united into the diocese of Ruvo e Bitonto in 1818.
The Diocese of Isola was a Roman Catholic diocese in Italy, located in Isola di Capo Rizzuto, Crotone, Reggio Calabria in the ecclesiastical province of Santa Severina.
The Diocese of Minori was a Roman Catholic diocese in Italy, located in Minori, province of Salerno, region of Campania in the ecclesiastical province of Amalfi. In 1815, it was suppressed, and its territory and Catholic population assigned to the Archdiocese of Amalfi.
The Diocese of Ston was a Roman Catholic diocese in Croatia, located in the city of Stagno. In 1828 it was suppressed to the Archdiocese of Dubrovnik.
The Diocese of Korčula was a Roman Catholic diocese in Croatia, located in the city of Korčula. In 1828, it was suppressed to the Archdiocese of Dubrovnik.
The Diocese of Levello was a Roman Catholic diocese in southern Italy, located in the city of Lavello, province of Potenza, in the region of Basilicata. In 1818, it was suppressed, and its territory and members incorporated in the Diocese of Venosa.
The Diocese of Umbriatico was a Roman Catholic diocese located in the town of Umbriatico in the province of Crotone in southern Italian region of Calabria. In 1818, it was suppressed with the bull De utiliori of Pope Pius VII, and incorporated in the diocese of Cariati.
The Diocese of Capodistria was a Roman Catholic diocese located in the town of Koper in southwestern Slovenia. In 1828, it was united aeque principaliter with the Diocese of Trieste to form the Diocese of Trieste e Capodistria.
The Diocese of Torcello or Diocese of Turris was a Roman Catholic diocese located in the town of Torcello in the province of Venice in northeastern Italy. In 1818, it was suppressed to the Patriarchate of Venice.
The Diocese of Caorle was a Roman Catholic ecclesiastical territory in the coastal town of Caorle in the province of Venice, Veneto.
Giovanni Tommaso Rovetta, O.P. was a Roman Catholic prelate who served as Bishop of Hvar (1693–1704).
Croatia 
