Chronology of Catholic Dioceses:Italy

See a list of abbreviations used in this list. See also our listing of current ecclesial jurisdictions.

We consider the following diocese to be unhistorical: Vetulonia.

40~

Roma (Apostolic origin) - Italy

100-200

Mileto / Miletum - Italy

100-200

Privernum (later Piperno) - Italy

170-220

Ravenna (legend: 1st century) - Italy

190-210

Napoli / Neapolis (legend: Apostolic origin) - Italy  

200-300

Canosa / Canusium, Canosium - Italy

200-300

Frascati / Tusculum - Italy

200-300

Milano / Mediolanum (legend: Apostolic origin) - Italy

200-300

Petelia - Italy

200-300

Porto / Portus Traiani - Italy

200-300

Sora - Italy

200-300?

Forlì / Forum Livi (legend: 2nd century) - Italy

200-400

Atella - Italy

200-400

Taormina / Tauromentium (legend: Apostolic origin) - Italy

237

Fondi / Fundi - Italy

250~

Nola (legend: 2nd century) - Italy

280-320

Siracusa / Syracusae (legend: 2nd century) - Italy  

290-300

Aquileia - Italy  

300-320

Benevento / Beneventum (other source: about 285) - Italy

300-320

Brescia / Brixia (legend: 1st century) - Italy

300-320

Capua (legend: 2nd century) - Italy

300-320)

Civitavecchia / Centumcellae - Italy (Note: in Upper Latium, not to be confused with Subaugusta = Centum Cellae, Centocelle of Lower Latium)

300-320

Ostia (legend: 3rd century) - Italy

300-320

Porto / Portus Romanus - Italy

300-320

Teano / Teanum [Sidicinum] - Italy

300-320

Terracina / Anxur, Terracina (legend: 1st century) - Italy

300-320

Tre Taverne / Tres Tabernae - Italy

300-320?

Pisa - Italy

300-320?

Siena / Senae, Sena - Italy

300-330

Forum Clodii - Italy

300-350

Chiusi / Clusium (tradition: 3rd century) - Italy

300-400

Brento / Brintum (abandoned in the same cent. and incorporated in Bologna) - Italy

300-400

Cagli / Callium - Italy

300-400

Eca / Aecae - Italy

300-400

Claterna - Italy

300-400

Milano (Metr.) - Italy

300-400

Narni / Narnia - Italy

300-400

Porec / Parenzo / Parentium – (Venetian Rep., Austria, Italy, Jugoslavia) Croatia

300-400

Santa Rufina / Sancta Rufina - Italy

300-400

Sarsina - Italy

300-400

Todi / Tuder, Tudertum (legend: 2nd century) - Italy

300-400?

Fano / Fanum [Fortunae] (legend: 1st century) - Italy

300-400?

Pesaro / Pisaurium (tradition: 3rd century) - Italy

300-450

Catania / Catana (legend: 1st century) - Italy

300-500

Sorrento / Surrentum - Italy

303~

Formia - Italy

304

Cività / Civitas (= modern Olbia discontinued) - Italy

312~

Modena / Mutina (tradition: 3rd century; first testimony 312 or 313) - Italy

313

Rimini / Ariminum (tradition: 3rd century) - Italy

313~

Altino / Altinum - Italy

313~

Bologna / Bononia (tradition: 3rd century; first testimony 313) - Italy

313~

Faenza / Faventia (tradition: 3rd century; first testimony of a bishop 313) - Italy

313~

Firenze / Florentia (legend: 1st century; but first testimony of bishop 313) - Italy

314

Arpi - Italy

314

Palestrina / Praeneste - Italy

323

Aosta / Augusta - Italy

325

Assisi / Assisium (first known bishop 547; but testimony of diocese 325) - Italy

330

Orte / Horta, Hortanum - Italy

334-345

Bergamo / Bergomum - Italy

337

Sora (tradition: 3rd century; first testimony of bishop 337) - Italy

337~

Arezzo / Arretium - Italy

343~

Lucca / Luca (legendary: 1st century; but first testimony of bishop 343/4) - Italy

345

Vercelli / Vercellae (tradition: 3rd century; first testimony 345) - Italy

350~

Padova / Patavium, later Padua (legend: 1st century) - Italy

350~

Tivoli / Tibur (legend: 2nd century) - Italy

350~

Tortona / Derthona (legend: 2nd century) - Italy

350?

Calvi / Cales - Italy

350-380

Trento / Tridentum (legend: 2nd century; first certain witness 381) - Italy

353~

Spoleto / Spoletum (legend: Apostolic origin) - Italy

353~

Terni / Interamna [Nahartium] (legend: 2nd century; first certain testimony: 353) - Italy

370-430

Verona (tradition: 3rd century) - Italy

372

Pozzuoli / Puteoli (legend: 1st century; first certain testimony 372) - Italy

373

Lodi / Laus Pompeia, Laudae - Italy

373?

Ventimiglia / Albium Intimelium, Albintimilum - Italy

379~

Como / Comum - Italy

380-420

Cagliari / Caralis / Casteddu - Italy

380-420

Concordia / Sagittaria (one source claims 381) - Italy

381~

Genova / Ianua, Genua (tradition: 3rd century; first testimony 381) - Italy

382~

Forlimpopoli /Forum Popilii - Italy

397~

Novara / Novaria - Italy

397~

Pavia / Ticinum, later Papia (legend: 1st century; some sources say ca 350, others ca 450; first bishop witnessed in 397) - Italy

398~

Siponto / Sipontum (tradition: 3rd century; first testimony of bishop 398) - Italy  

400-420

Potenza Picena / Potentia in Piceno (end unclear, now part of AD of Fermo) - Italy

400-420

Torino / Augusta Taurinorum - Italy

400-420~

Labico Quintanense / Labicum (tradition: 4th century) - Italy

400-451

Albenga / Albingaunum - Italy

400-451

Asti / Asta Pompeia - Italy

400-500

Adria / Adria, Hadria - Italy

400-500

Bevagna / Mevania - Italy

400-500

Bosa - Italy

400-500

Bovino / Bobinum - Italy

400-500

Brindisi / Brundusium, Brundisium (tradition: 4th century; 677-784 Byz. Rite, while the Latin D moved to Oria) - Italy

400-500

Cassano all'Jonio / Cassanum - Italy

400-500

Claterna (abandoned, incorporated in Bologna) - Italy

400-500

Conversano / Cupersanum - Italy

400-500

Gerace / Hieracium (Byz. Rite till the end of XI cent. [but Greek bishops survive alongside the Roman ones til 1497 in the Church of San Ciriaco])- Italy

400-500

Isernia / Aesernia - Italy

400-500

Literno / Liternum - Italy

400-500

Nocera [N. Umbra] / Nuceria - Italy

400-500

Penne / Pinnae - Italy

400-500

Pula / Pola – (Venetian Rep., Austria, Italy, Jugoslavia) Croatia

400-500

Segni / Signia - Italy

400-500

Tadina / Gualdo Tadino - Italy

400-500

Vado Ligure - Savona / Vada-Savo (first attested in 7th cent., but likely foundation earlier) - Italy

400-500

Volterra / Volaterra - Italy

400-600

Avellino / Abellinum (legend: first half of 2nd century) - Italy

400-600

Blanda / Blanda Iulia (tradition: 3rd century) - Italy

400-600

Salerno / Salernum - Italy

401~

Nomentum - Italy

416~

Gubbio / Eugubium, Iguvium (other sources: 3rd cent., 4th cent.) - Italy

417~

Eclano / Aeclanum - Italy

417~

Lilibeo / Lilybaeum - Italy

419~

Nepi / Nepeta - Italy

421~

Oderzo / Opitergium - Italy

431

Voghenza / Vicohabentia - Italy

440-461

Frigento / Frequentium - Italy

450~

Albano / Albanum - Italy

450~

Amelia / Ameria - Italy

450~

Anzio / Antium - Italy

450~

Ascoli Piceno / Asculum (tradition: 4th century) - Italy

450~

Aveia Vestina - Italy

450~

Bari / Barium (tradition: 4th century) - Italy

450~

Camerino / Camerinum (tradition: 3rd century) - Italy

450~

Cassino / Casinum (later Abb. Monte Cassino / Montecassino) - Italy

450~

Città di Castello / Tifernum Tiburtinum, T. Tiberinum - Italy

450~

Civita Castellana / Falerii, Civitas Castellana - Italy

450~

Cremona (tradition: 3rd century) - Italy

450~

Cuma / Cumae (other source: about 268) - Italy

450~

Falerone / Falerio (disappeared in ..., incorporated in Fermo) - Italy

450~

Forum Novum (legend: Apostolic origin) - Italy

450~

Fossombrone / Forum Sempronii - Italy

450~

Ivrea / Eporedia, Ipporegia - Italy

450~

Palermo / Panormum (legend: 1st century) - Italy

450~

Pausula (now Corridonia) / Pausulae (disappeared in ..., incorporated in Fermo) - Italy

450~

Piacenza / Placentia (tradition: 4th century) - Italy

450~

Salpi / Salapia (tradition: 4th century) - Italy

450~

Sant'Angelo in Vado / Tifernum Metaurum (suppressed (?) in ..., revived in 1635 and united with Urbania??)- Italy

450~

Squillace / Scyllatium = Scyllaceum (tradition: 4th century) - Italy

450~

Subaugusta / Centocelle (now part of Rome) - Italy

450~

Tarquinia / Tarquinii (suppressed in ..., revived in 1435 as Corneto Tarquinia??) - Italy

450~

Velletri / Velitrae - Italy

450~

Vettona / Bettona / Bettonium (legend: 1st century) - Italy

450-465~

Aquino / Aquinum - Italy

450-500

Fiesole / Fesulae (legend: 1st century) - Italy

450-500

Lilibeo (city destroyed, see probably abandoned) - Italy

450-500

Perugia / Perusia (legend: 2nd century) - Italy

450-500

Pistoia / Pistoria (tradition: 3rd century; testimony of first bishop late 5th century) - Italy

450-500?

Acqui / Aquae [Statiellae]- Italy

451~

Brescello / Brixellum - Italy

451~

Cefalù (legendary origin, later destroyed by the Saracens) - Italy

451~

Reggio Emilia / Regium Lepidum (legend: Apostolic origin; first certain testimony 451) - Italy

451~

Vibo Valentia / Vibona, Hipporion ([Byz. Rite till the end of XI cent., afterwards Greek bishops serve alongside with Latin bishops till XIV cent.]) - Italy

457~

Blera, Bieda / Blera - Italy

457~

Termini Imerese / Termae Himerae - Italy

465

Acquaviva / Aquaviva - Italy

465

Telese / Cerreto Sannita; Telesia / Cerretum - Italy

465~

Cures - Italy

465~

Luni / Luna (tradition: 4th century) - Italy

465~

Numana (later Umana, and then again Numana) - Italy

465~

Sutri / Sutrium - Italy

465~

Taranto / Tarentum (legend: 2nd century, first witnessed 465) - Italy

475-500

Alba / Alba Pompeia - Italy

480-500

Acerenza / Acheruntia - Italy

480-500

Agrigento (tradition: 4th century) - Italy

480-500

Alfedena / Aufidena - Italy

480-500

Alife / A[l]lifae (maybe 499?) - Italy

480-500

Amalfi / Amalphia - Italy

480-500

Anagni / Anagnia - Italy

480-500

Ancona (tradition: about 300) - Italy

480-500

Arna - Italy

480-500

Asolo / Acelum (legend: around 100) - Italy

480-500

Boiano / Bobanium, Bovianum - Italy

480-500

Bolsena / Volsinium - Italy

480-500

Carmeia - Italy

480-500

Caudio (now Tocco Caudio) / Caudium - Italy

480-500

Cervia / Phicocle, Ficoclum - Italy

480-500

Cluentum (now Civitanova Marche, disappeared later) - Italy

480-500

Corfinio, Pentima / Corfinium - Italy

480-500~

Ferentino / Ferentinum - Italy

480-500

Foligno / Fulginium (legend: 1st century) - Italy

480-500

Imola / Forum Cornelii, Imola (tradition: 4th century) - Italy

480-500

Larino / Larinum - Italy

480-500

Lorium (disappeared later) - Italy

480-500

Lucera / Luceria (tradition: 4th century) - Italy

480-500

Matelica / Mat(h)elica - Italy

480-500

Minturno / Minturnum (tradition: 3rd century) - Italy

480-500

Ofena / Aufinium - Italy

480-500

Ordona / Herdonia (tradition: 3rd century) - Italy

480-500

Ostra (later incorporated in Senigallia) - Italy

480-500

Otricoli / Otriculum, Ocriculum (not clear when suppressed and incorporated in Terni?) - Italy

480-500

Pitino / Pitinum Mergens (later incorporated in S. Angelo in Vado?) - Italy

480-500

Plestia (later incorporated in Assisi?) - Italy

480-500

Rieti / Reate - Italy

480-500

Sala Consilina / Oppidum Consilinum, Marcellianum (another tradition: 308/9) - Italy

480-500

Sessa Aurunca / Suessa - Italy

480-500

Spello / Hispellum - Italy

480-500

Thurio / Thurii, Thurium (tradition: 4th century) - Italy

480-500

Tolentino / Tolentinum - Italy

480-500

Tronto / Truentum (later incorporated in Fermo?) - Italy

480-500

Urbisaglia / Urbs Salvia (later incorporated in Tolentino?) - Italy

480-500

Vasto [Il Vasto] / Histonium - Italy

480-500

Venafro / Venafrum - Italy

480-500

Venosa / Venusium - Italy

480-500

Volturno (now Castel Volturno) / Volturnum - Italy

484~

Sulcis / Sulci [Sant'Antioco] (later transferred to Tratalias) - Italy

484~

Torres (now Porto Torres) / Turris Libysonis or Libissonis - Italy

484

Fordongianus / Forum Traiani - Italy

487~

Ferento / Ferentum - Italy

487~

Trevi [nel Lazio] / Treba (first known bishop now, but legendary foundation 88-97) - Italy

490-500

Amiterno / Amiternum (tradition: 4th century) - Italy

492-496

Potenza / Potentia - Italy

495

Populonia - Italy

495~

Norcia / Nursia - Italy

499~

Cerveteri / Caerae - Italy

499~

Roselle / Rusellae - Italy

500-520

Egnazia / Egnat(h)ia - Italy

500-520

Foro Flaminio / Forum Flaminii ([Website Foligno] abandoned later in same century, now San Giovanni Profiamma, part of the town and diocese of Foligno) - Italy

500-520

Lipari / Liparis - Italy

500-520

Messina / Messana - Italy

500-520

Miseno / Misenum (legend: Apostolic origin) - Italy

500-520

Sannio / Samnium (denomination referring to a region rather than to a place?) - Italy

500-520

Senigallia / Sena Gallica, Senogallia - Italy

500-520

Stabia / Stabiae (tradition: 4th century, later Castellammare di Stabia) - Italy

500-520

Tempsa, Temesa - Italy

500-520

Tindari / Tyndaris - Italy

500-520

Trani / Tranium, Tranum - Italy

500-550

Eclano (extinct) - Italy

500-600

Bagnoregio / Bagnorea / Balneoregium - Italy

500-600

Bari (Metr.) (between 8th and 11th century: Byz. Rite; two bishops?) - Italy

500-600

Canosa (incorporated in Bari) - Italy

500-600

Ceneda / Ceneta - Italy

500-600

Cervia / Phicocle, Ficoclum - Italy

500-600

Chieti / Teate - Italy

500-600

Comacchio / Comaclum, Cymachum - Italy

500-600

Forum Flaminii (abolished and incorporated in Foligno) - Italy

500-600

Jesi / Aesis - Italy

500-600

Marruvium / Caelenae - Italy

500-600

Ofena / Aufinium (abandoned) - Italy

500-600

Parma (tradition: 4th century) - Italy

500-600 (less reliable: 300-400)

Pola / Pula - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

500-600

Ruvo / Rubi - Italy

500-600

Sant'Agata de' Goti / Agathopolis - Italy

500-600

Senigallia / Senogallia - Italy

500-600

Sepino / Saepinum - Italy

500-600

Sovana-Pitigliano / Soana-Pitigliano / Soanum-Pitilianum - Italy

500-600

Sulmona / Sulmo - Italy

500-600

Vettona / Bettona (extinct) - Italy

500-600 (or 900)

Vegia / Vegla / Veglia / Krk - (Venetian Republic, Hungary, Yugoslavia) Croatia

500-600

Viterbo / Viterbium - Italy

500-600

Zuglio / Iulium Carnicum - Italy

501~

Altino (abandoned) - Italy

502~

Acquaviva / Aquaviva (abandoned) - Italy

502~

Fidene / Fidenae - Italy

502~

Subaugusta (abandoned) - Italy

512

Buxentum / Bussento - Italy

524 (legendary: 3rd Cent.)

Aemonia / Cittanova d'Istria / Novigrad (not to be confused with Emona/Aemona = Ljubljana) - (Venetian Republic, Hungary, Yugoslavia) Croatia

529

Montecassino / Mons Casinus (Abb., previously D Cassino) - Italy

530~

Arbe / Arba / Rab - (Venetian Republic, Austria, Yugoslavia) Croatia

530~ (or 4th Cent.)

Iadera, Iadra, Diadora / Zara / Zadar - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

~530? (until 550)

Septempeda (soon thereafter extinct, and territory de facto incorporated in Tolentino ?) - Italy

530-551

Alatri / Aletrium, Alatrium - Italy

546~

Ravenna (Metr.) - Italy

546

Strongoli (new name, perviously Petelia) - Italy

550~

Cesena / Caesena (legend: 1st century) - Italy

550~

Cingoli / Cingulum - Italy

550~

Cissa [on an island in front of Rovinj / Rovigno] - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

550~

Crotone or Cotrone / Crotona ([Byz. Rite till the end of XI cent., afterwards Greek bishops serve alongside with Latin bishops till 1261]) - Italy

550~

Fermo / Firmum (tradition: 3rd century) - Italy

550~

Gallipoli / Callipolis (between 8th and 11th century Byz. Rite) - Italy

550~

Gerace / Hieracium (perhaps named Locri at the very beginning; Byz. Rite till the end of 11th century [but Greek bishops survive alongside the Roman ones till 1497 in the Church of San Ciriaco])- Italy

550~

Grumento Nova / Grumentum - Italy

550~ (testimony of first bishop 579)

Pedena / Petina, Pican - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

550~

Reggio Calabria / R(h)egium Iulii (legend: 1st century, some testimonies in the II cent., other sources indicate ca 559 [Byzantine Rite till the end of XI cent., afterwards a period when Greek bishops serve alongside with Latin Rite bishops]) - Italy

550~

Treviso / Tarvisium (tradition: 4th century) - Italy

550~

Trieste (Slovenian: Trst) / Tergeste, Tergestum - Italy

550~

Urbino / Urbinum - Italy  

558-560

Aquileia (Patr.) - Italy

568

Milano / Mediolanum (see moved to Genova during the Lombard invasion) - Italy

570~

Bevagna / Mevania (abolished and incorporated in Spoleto) - Italy

570~

Norcia (abolished and incorporated in Spoleto) - Italy

570~

Rieti (abolished and incorporated in Spoleto) - Italy

570~

Spello / Hispellum (abolished and incorporated in Foligno) - Italy

570~

Terni (abolished and incorporated in Spoleto) - Italy

570~

Trevi [in Umbria] (abolished and incorporated in Spoleto) - Italy

571-574?

Amiterno / Amiternum (destroyed, but not formally abolished) - Italy

575-600

Bolsena-Orvieto / Urbs vetus, Utbiventum (new name, some time after see moved from Bolsena to Orvieto) - Italy

580~

Alfedena / Aufidena (destroyed, territory incorporated in Sulmona) - Italy

580~

Sabiona / Säben - Italy

580-600

Belluno / Bellunum (legend: 2nd century; maybe end of 4th century; most likely 580-600) - Italy

580-600

Bisenzio / Bisentium / Visentium (tradition: 4th century) - Italy

580-600

Carini / Hyccara - Italy

580-600

Compulteria (date of suppression not known) - Italy

580-600

Cosenza / Consentia, Cusentia - Italy

580-600

Feltre / Feltria - Italy

580-600

Lecce / Lycia (Aletium, Lupiae) - Italy

580-600

Meria - Italy

580-600

Ortona - Italy

580-600

Osimo / Auximum - Italy

580-600

Teramo / Interamna Praetutianorum, Teramum - Italy

580-600

Tricala / Triokala / Trecalae / Troccoli (legend: 3rd century) - Italy

580-600 (but [FD] 580-600, [CI] 595)

Tuscania, Toscanella / Tuscania (tradition: 3rd century; more reliable: 580-600 - maybe 595) Italy

580-600

Vicenza / Vicetia, Vicentia (legend: 2nd century; maybe end of 4th century; most likely 580-600) - Italy

590 (maybe already 499)

Minturno (incorporated in Formia) - Italy

590~

Valva, La Valva (continuation of Corfinium; the name probably designated rather a valley than a precise place; the see has been again in Pentima = Corfinio till the fusion with Sulmona in 13th. century) - Italy

592

Paestum / Paestum and Agropolis (probably only one diocese; the see of Paestum was very early moved to Agropolis) - Italy

592

Blanda / Blanda Iulia (incorporated in Paestum) - Italy

592

Velia - Italy

593

Cures (incorporated in Nomentum) - Italy

594

Fausiana (first testimony) - Italy

595

Bomarzo / Polymartium (new name, see moved from Ferento) - Italy

595~

Toscanella / Tuscania - Italy

596~

Otranto / Hydruntum, Ydruntum (between 8th century and 1085 Byz. Rite; two bishops?) - Italy

597~

Rossano / Rossanum (new name, see moved from Thurio [Byz. Rite till the end of XI cent., afterwards Greek bishops serve along Latin bishops till 1364]) - Italy

598

Nocera de' Pagani / Nuceria Paganorum (first testimony maybe 402, might be even older) - Italy

599

Nicotera / Nicotra ([Byz. Rite till the XII cent.]) - Italy

599~

Tharros - Italy  

600-620

Lentini / Leontini - Italy

600-650

Vico Equense / Vicus - Italy

600-700

Bisarcio / Bisarchium - Italy

600-700

Bova / Boba (Greek: Vua) - Italy ([Byz. Rite till the end of 11th century) - Italy

600-700

Carsoli / Carsulae (abandoned in the same cent., now part of the town of Foligno) - Italy

600-700

Chioggia /[Fossa] Clodia - Italy

600-700

Equilium / Ecilium / Equilio (now Iesolo) - Italy

600-700

Leuca/ Leucas [Byz. Rite, Latin rite about 10th century] - Italy

600-700

Monterano / Manturia, Manturianum (new name, previously Forum Clodii. Probably abandoned later in the same century) - Italy

600-700

Ordona / Herdonia (destroyed by Lombards [Langobardi] of Benevento) - Italy

600-700

Polignano / Polinianum - Italy

600-700

Pomposa /Pomposia (Abb. "nullius dioeceseos") - Italy

600-700

Santa Severina / Siberene, Sancta Severina ([Byz. Rite till 1136]) - Italy

600-700

Tropea / Tropium, Tropaea - Italy

600-700

Ugento / Uxentum, Uzentum [Byz. Rite, Latin rite about 10th century] - Italy

600-700

Uselli / Uxellum, later Ales / Alesium - Italy

600~

Tauriana / Taurianum - Italy

603~?

Brixellum / Brescello (abandoned now, maybe later) - Italy

606

Concordia or Caorle / Caprulae (Concordia destroyed 606, see of diocese moved to Caorle, Concordia remained the name although Caorle used alteratively) - Italy

615 / 643?

[San Colombano di] Bobbio / Sancti Columbani in Bobio (founded in 615 by Irish monks, since 643 Benedictine Abb. "nullius dioeceseos") - Italy

624

Ferrara / Ferraria (new name, see moved from Voghenza) - Italy

638

Eraclea / Eracliana / Melidissa / later: Cittanova (new name, see moved from Oderzo) - Italy

640

Torcello / Turris, Turricellum - Italy

650

Milano / Mediolanum (see moved back from Genova) - Italy

650~

Cissa (island submerged and D incorporated in Pula) - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

[677-784]

- Oria / Uria (provisional see of the Latin bishop of Brindisi, when in Brindisi there was one of Byz. rite, united with Brindisi ca. 785 and probably not independent Diocese until 1591 [information from Brindisi's website, but in contradiction to Annuario Pontificio]) - Italy

680~

Castro [del Lazio] / Castrum in Tuscia (new name, moved from Visentium / Bisentium / Bisenzio; destroyed by Saracens in 9th century) - Italy

680~

Ordona / Herdonia (destroyed by Lombards) - Italy

682

Castro [di Puglia] / Castrum in Apulia [Byz. Rite, Latin rite about 10th cent.] - Italy

700~

Orvieto / Urbs vetus, Urbiventum (new name, previously Bolsena-Orvieto) - Italy

700-800

Bisceglie / Vigilia - Italy

700-800

Gallese / Gallesium, Gallesa - Italy

700-800??

Martana / Martana Tudertinorum (abandoned and incorporated in Todi) - Italy

700-800

Novalesa (Abb., detached from Torino) - Italy

700-800

Oria / Uria - Italy

700-800

Sezze / Setia - Italy

700-800

Veroli / Verulae - Italy

705-707

San Vincenzo al Volturno (Abb., previously Volturno, D) - Italy

742

Methamaucum / Malamocco - Italy

743

Conza / Compsa - Italy

743

Santissimo Salvatore all'Amiata (Abb.) - Italy

752

Nonantola / Nonantula (Abb.) - Italy

774

Olivolo or Rialto / Olivolum, Ripus Altus (later: Castello and Venezia) - Italy

775

Farfa (Abb.) - Italy

785

Brindisi e Oria (new name, previously Brindisi) - Italy

790-810~

Bisignano / Bisidiae, Bisinianum - Italy  

800~

Castroleopoli (Leopoli) e Traetto (founded at the time of pope Leo III) - Italy

800-900

Bitonto / Budruntum, Bituntum - Italy

800-900

Caiazzo / Calatia, Caiatia - Italy

800-900

Carini (abandoned) - Italy

800-900

Formia-Gaeta / Formia-Caieta (new name, previously Formia, but the see was in Gaeta since 590) - Italy

800-900

Gravina - Italy

800-900

Marsi [the denomination is not territorial, but ethnic] - Italy

800-900

Matera / Mateola - Italy

800-900

Minervino [Murge] / Minerbium, Minervium - Italy

800-900

Ortona (abandoned) - Italy

800-900?

Cirella - Italy

800-1000?

Amantea - Italy

804

Mantova / Mantua - Italy

811

Methamaucum / Malamocco (incorporated in Rialto) - Italy

821~

Asolo / Acelum (abandoned, territory incorporated in Treviso in 969) - Italy

826

Montefeltro / Feretrum / Mons Feretranus - Italy

829

Agrigento (abandoned due to the Saracens) - Italy

831~

Messina (vacant, abandoned during Saracen rule) - Italy

836

Tindari / Tyndaris (abandoned due to the Saracens, territory later reorganized in the D of Patti) - Italy

837~

Tricala (abandoned due to the Saracens, territory incorporated in Agrigento) - Italy

844/847

Sepino / Saepinum (probably disappeared after the earthquakes of 844 or 847 ) - Italy

847~

Lentini (abandoned due to the Saracens) - Italy

850~

Castello / Castellum (new name of Olivolo or Rialto - later: Venezia) - Italy

850~

Nicastro / Neocastrum (between 963-1094: Byzantine rite) - Italy

867

Gaeta / Caieta (new name, previously Formia-Gaeta) – Italy

870

Absorus / Ossero / Osor (in the Is. Cres / Cherso) - (Venetian Republic, Hungary, Yugoslavia) Croatia

878

Siracusa / Syracusae (vacant/abandoned due to Arab invasion) - Italy

886~

Termini Imerese (abandoned due to the Saracens, territory incorporated in Agrigento, and Palermo) - Italy

887

Savona / Savo, Sabata (new name, previously Vado-Savona) - Italy 

900-1000

Brindisi (Metr.) - Italy

900-1000

Grumento (destroyed by the Saracens and abandoned, continued by Marsico Nuovo) - Italy

900-1000

Napoli (Metr.) - Italy

900-1000

Novalesa (destroyed, territory reincorporated in Torino) – Italy

900-1000

Salerno (Metr.) - Italy

900-1000

Trivento / Triventum - Italy

902~

Taormina (abandoned) - Italy

937

Subiaco / Sublacum (Abb.) - Italy

944

Nomentum (incorporated in Forum Novum [de facto this happened already about 804]) - Italy

946

Termoli / Thermulae - Italy

960

Sant'Agata de' Goti (reerected) - Italy

964~

Trevico - Italy

966~

Atina (territorial Prepositure, first mentioned in 966) - Italy

966

Capua (Metr.) - Italy

968

Taranto (Metr., Byz. - changed to Latin rite about 1080) – Italy

968

Tricarico / Tricaricum [Byz.] - Italy

968~

Tursi / Tursium - Italy

969

Benevento (Metr.) - Italy

980-1000

Cirella (destroyed by the Saracens, territory incorporated in San Marco Argentano) - Italy

980-1000

Tempsa, Temesa (destroyed by the Saracens, territory incorporated in Nicastro) - Italy

984

Lettere / Litterae - Italy

987

Amalfi (Metr.) - Italy

987

Capri / Capreae - Italy

987

Minori / Minora - Italy

987

Scala - Italy

992

Bressanone / Brixen (new name, see moved from Sabiona / Säben) - Italy

993~

Merino and Vieste / Vieste / Apenestae, Vesta - Italy

1000-1050

Muro Lucano / Numistro, Civitas Muri - Italy

1000-1100

Acerenza (Metr.) - Italy

1000-1100

Acerra / Cerenthia, Acerrae - Italy

1000-1100

Ariano Irpino / Arianum in Irpinia - Italy

1000-1100

Arpi (destroyed by the Saracens and abandoned, territory incorporated in Siponto) – Italy

1000-1100

Ascoli Satriano / Satrianum, Asculum Apuliae - Italy

1000-1100

Bobbio / Bobium (D, and new name, previously Abb. "nullius Dioeceseos" San Colombano di Bobbio) - Italy

1000-1100

Bomarzo (incorporated in Bagnoregio) - Italy

1000-1100

Cagliari (Metr.) - Italy

1000-1100

Castellaneta / Castania, Castellanetum - Italy

1000-1100

Conza (Metr.) - Italy

1000-1100

Giovinazzo / Iuvenatium - Italy

1000-1100

Lacedonia / Aquilonia, Laquedonia - Italy

1000-1100

Marsico Nuovo / Marsicum (continuation of Grumento, destroyed by Saracens and abandoned) - Italy

1000-1100

Massa Carrara (Abb. "nullius dioeceseos", detached from Lucca) - Italy

1000-1100

Matera (Metr.) - Italy

1000-1100

Melfi / Melphis - Italy

1000-1100

Monopoli / Monopolis - Italy

1000-1100

Montemilone / Mons Milonis – Italy

1000-1100

Ostuni / Hostunum - Italy

1000-1100

Otranto (Metr.) - Italy

1000-1100

Palermo (Metr.) - Italy

1000-1100

Rapolla - Italy

1000-1100

Reggio Calabria (Metr.) - Italy

1000-1100

Sala Consilina / Oppidum Consilinum (abandoned, incorporated in Capaccio) - Italy

1000-1100

Santa Severina (Metr.) - Italy

1000-1100

Satriano/ Satrianum (in Basilicata = Lucania) - Italy

1000-1100

Sorres / Sorra - Italy

1000-1100

Suelli - Italy

1000-1100

Terlizzi / Terlitium - Italy

1000-1100

Trani (Metr.) - Italy

1000-1100

Venafro / Venafrum (probably revival) - Italy

1000~

Castroleopoli (Leopoli) e Traetto (abandoned) - Italy

1004~

Nusco / Nuscus - Italy

1007

Tadina / Gualdo Tadino (incorporated in Nocera) - Italy

1019

Troia (new name; continuation of Eca) - Italy

1023

Mottola / Motula - Italy

1024

Massa Lubrense / Massa Lubrensis - Italy

1029

Caere / Cerveteri (suppressed, incorporated in Porto) – Italy

1030

Canne / Cannae - Italy

1030-1040

Malvito / Malvitum? - Italy

1030-1040

Umbriatico / Umbriaticum - Italy

1031

Cefalù / Cephaloedium, Cephaludium (reconstituted, detached from Messina) - Italy

1042

Oulx / Saint-Laurent d'Oulx (Prepositure; belonged to France from 1231 to 1713) - Italy

1049

Monteverde / Mons Viridis - Italy

1053

Aversa (comprising of the old dioceses of Atella, Cuma, Miseno, and Literno) - Italy

1054

Zadar / Zara (Metr.) - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

1059

Civitate [sul Furtore] / Civitas - Italy

1059

Dragonara / Draconaria (abandoned a few decades later) - Italy

1059

Fiorentino / Florentinum - Italy

1059

Guardialfiera / Guardia - Italy

1059

Montecorvino / Mons Corbinus - Italy

1059

Montemarano - Italy

1059

Tortiboli - Italy

1059

Vulturara / Vulturaria - Italy

1060

Gabii (suppressed, incorporated in Palestrina) - Italy

1060

Santissimo Salvatore (Abb. [Byz.], erected from the old territories of Triocala) - Italy

1061

Troina (established from Messina territories) - Italy

1062~

Castro [di Sardegna] / Castrum in Sardinia - Italy

1065

Anglona / Pandosia, Anglona [Byz. rite: 1065-1110] - Italy

1065

Ottana / Othana - Italy

1066

Sarno / Sarnum - Italy

1068

Sorrento (Metr.) - Italy

1068

Tricarico (now of Latin rite) - Italy

1073

Arborea / Oristano (Metr., and new name, previously Tharros) - Italy

1073

Torres (Metr.) - Italy

1073-1085

Sant'Angelo dei Lombardi - Italy

1074

Manfredonia (Metr., and new name, previously Siponto) - Italy

1079

Policastro (regarded as continuation of Buxentum) - Italy

1080

Cerenza / Geruntia / Pumentum - Italy

1080

Malvito (suppressed, and incorporated in San Marco) - Italy

1081

Santissimo Salvatore [Maggiore] in Messina / Sanctissimi Salvatoris in Messana (territorial Archimandritate = Abb. of Greek rite, erected from part of the old territories of Tricala, Latin rite from 1635) - Italy

1081

Troina (reincorporated in Messina, which is now revived) - Italy

1083

Mileto (reerected) - Italy

1083

Tauriana (incorporated in Mileto) - Italy

1083

Vibona (incorporated in Mileto) - Italy

1087~

Carinola / Calina - Italy

1087-1088

Ravello / Rebellum - Italy

1090

Ploaghe / Plovacum - Italy

1092

Pisa (Metr.) - Italy

1092

Siracusa / Syracusae (revived) - Italy

1093

Girgenti (reestablished with new name, previously Agrigento) - Italy

1093

Mazara del Vallo - Italy

1094

Amantea (destroyed and abandoned, territory incorporated in Cosenza) - Italy

1099

Blera (suppressed, incorporated in Tuscania) - Italy

1099

Centocelle / Civitavecchia (suppressed, incorporated in Tuscania) - Italy

1099~

Martirano / Martoranum - Italy

1100-1119

Andria - Italy

1100-1200

Acerno / Acernum - Italy

1100-1200

Galtellì - Italy

1100-1200

Montevergine / Mons Virginis (Abb. "nullius doeceseos") - Italy

1100-1200

Terralba / Terra Alba - Italy

1100-1200

Vescovio (new name, previously Forum Novum) - Italy

1106?

Alghero - Italy

1111

Labico Quintanense (suppressed, incorporated in Tuscania) - Italy

1112

Dolia - Italy

1113

Ampurias - Italy

1113?

Caserta - Italy

1114~

Isola - Italy

1119

Othoca / Santa Giusta - Italy

1119

Porto e Santa Rufina (united) - Italy

1121

Catanzaro - Italy

1122~

Belcastro - Italy

1131

Patti e Lipari / Pactae et Lipara (D, Patti a revival of Tindari, Lipari being an ancient territorial abbey) - Italy

1133-1194

Massa [Marittima] (Massa Veternensis) - Populonia (new name of Populonia, but the see had been already there since one century; the coastal part of the D and the island of Elba [Piombino and Elba] theoretically belonged to France 1803-1816, having been attached to Ajaccio) - (France) Italy

1133

Genova (Metr.) - Italy

1133

Brugnato (detached from Luni) - Italy

1136~

Molfetta - Italy

1137

Montecorvino (destroyed, de facto abandoned as diocese) - Italy

1137

Nocera de' Pagani (destroyed, de facto abandoned as diocese) - Italy

1138

Grosseto / Rosetum (continuation of Rusellae) - Italy

1140

Santi Vincenzo ed Anastasio alle Tre Fontane (territorial Abbey with see near Rome, but its territory was mainly around Orbetello, and also in little exclaves within Civita Castellana and Nepi) - Italy

1150

Cosenza (Metr.) - Italy

1150

Velletri (incorporated in Ostia) - Italy

1166

Messina (Metr.) - Italy

1169

Lettere-Gragnano (new name, previously Lettere) - Italy

1175

Alessandria [della Paglia] / Alexandria Statiellorum (detached from Acqui) - Italy

1176

Monreale - Italy

1178~

Forcona - Italy

1179~

Bisaccia - Italy

1179~

Capaccio (new name, previously Paestum) - Italy

1179

Ischia - Italy

1179

San Marco - Italy

1180

Alessandria (incorporated in Acqui, but soon after reestablished) - Italy

1183

Monreale (Metr.) - Italy

1192

Toscanella /Tuscania (incorporated in Viterbo) - Italy

1197

Belluno e Feltre (united) - Italy

1200-1300

Alessano (new name, previously Leuca) - Italy

1200-1300

San Martino al Monte Cimiono (Abb.) - Italy

1203

Acerenza e Matera (Metr., Matera united with Acerenza) - Italy

1205

Alessandria (incorporated in Acqui) - Italy

1206

Santa Lucia del Mela (Prel.) - Italy

1217

Terracina, Sezze e Piperno (later Priverno, united) - Italy

1218?

Rieti (reestablished, detached from Spoleto) - Italy

1218

Terni (reestablished, detached from Spoleto) - Italy

1228

Nocera de' Pagani (restored) - Italy

1230~

Civitate (destroyed, but continued nominally) - Italy

1235

Monteleone Calabro (new name, previously Vibo Valentia) - Italy

1239

Noli (detached from Savona) - Italy

1239

Noli e Brugnato (Noli united with Brugnato) - Italy

1239

Recanati - Italy

1245

Brugnato (detached from Noli e Brugnato) - Italy

1245

Noli (detached from Noli e Brugnato) - Italy

1248

Altamura (Prel.) - Italy

1251

Atri - Italy

1252

Penne e Atri - Italy

1254

Lesina - Italy

1257

L'Aquila (new name, previously Forcona) - Italy

1257

Amiterno (incorporated in L'Aquila) - Italy

1260

Nocera de' Pagani (suppressed) - Italy

1261

Nonantola (Abb., united in persona episcopi with Modena) - Italy

1280-1295

Oppido Mamertina - Italy

1300-1400

Cariati - Italy

1303

Canne (incorporated in Barletta) - Italy

1309

Cittaducale, Città Ducale / Civitas ducalis (detached from Rieti) - Italy

1319

Monte Oliveto Maggiore (Abb.) - Italy

1320

Macerata - Italy

1300-1320

Tursi (incorporated in Anglona) - Italy

1322~

San Leo - Italy

1325

Cortona (detached from Arezzo) - Italy

1345

Nepi e Sutri (united) - Italy

1350-1400

Lesina (incorporated in Larino) - Italy

1360

Bertinoro (new name, previously Forlimpopoli) - Italy

1369

Montefiascone - Italy

1385

Nocera de' Pagani (restored) - Italy

1388

Mondovì / Mons Regalis in Pedemonte, Mons Vici (detached from Asti) - Italy

1391

Fiorentino (incorporated in Lucera) - Italy

1394

Cava - Italy

1394

Santissima Trinità de Cava de' Tirreni (Abb.) - Italy

1399

Lipari (Abb.) (detached from Patti e Lipari) - Italy

1399

Patti (new name, previously Patti e Lipari) - Italy

1400-1450

Montepeloso / Mons Pelusius - Italy

1400-1500

Agosta (suffragan of Monreale, disappeared the same century) - Italy

1405

Alessandria (reestablished, detached from Acqui) - Italy

1409~

Tortiboli (incorporated in Lucera) - Italy

1413

Nardò - Italy

1419

Firenze (Metr.) - Italy

1420

Satriano (suppressed) – Italy

1420

Suelli (suppressed, incorporated in Cagliari) - Italy

1422

Ancona e Numana (united, Cingoli detached) - Italy

1425

San Paolo fuori le Mura (Abb.) - Italy

1433

Montecorvino (formally incorporated in Vulturaria) - Italy

1435

Corneto Tarquinia - Italy

1437

Civita Castellana e Orte (united) - Italy

1440

Cittanova (suppressed, incorporated in Grado) - Italy

1441

Sassari ([Metr.], new name, previously Torres [the see had been transferred to Sassari already about 1250, but retained its old name until now]) - Italy

1447

Sarzana - Italy

1449

Bagnoregio / Bagnorea (integrated in Viterbo, but probably soon thereafter reestablished as separate diocese) - Italy

1451

Venezia (previously Castello, Patr. moved from Grado [Patr.], which is incorporated in Venezia) - Italy

1452

Andria e Montepeloso (united) - Italy

1459

Siena (Metr.) - Italy

1460

Rossano (AD) - Italy

1462

Belluno (detached from Belluno e Feltre) - Italy

1462

Feltre (detached from Belluno e Feltre) - Italy

1462

Montalcino (detached from Arezzo) - Italy

1462

Pienza e Montalcino / Pientia et Mons Ilcinus (erected and united [CI], detached from Arezzo, and from the Abb. of SS. Salvatore all'Amiata, probably abolished then) - Italy

1462

Santissimo Salvatore all'Amiata (terr. Abb., probably abolished then and incorporated in Pienza) - Italy

1465

Luni-Sarzana (new name, previously Luni, the see had been moved to Sarzana since 1204) - Italy

1466

Avellino e Frigento (united) - Italy

1471

Guastalla (Archpresbyterate "nullius", detached from Reggio Emilia) - Italy

1474

Casale Monferrato / Condigomagus (detached from Vercelli) - Italy

1479

Andria (new name, previously Andria e Montepeloso) - Italy

1479

Montepeloso (reestablished, detached from Andria e Montepeloso) - Italy

1502-1503

Fausiana (suppressed, incoporated in Ampurias) - Italy

1503

Ales e Terralba (united) - Italy

1503

Alghero (renewed after a long period of neglect) - Italy

1503

Bisarcio (suppressed, incorporated in Alghero) - Italy

1503

Dolia / Dolianova (suppressed, incoporated in Cagliari) - Italy

1503

Iglesias (Villa di Chiesa) / Villeclesia Argentaria (the see of the diocese of Sulcis, before in Tratalias, transferred, name of diocese changed) - Italy

1503

Ploaghe (suppressed, incoporated in Sassari) - Italy

1503

Santa Giusta (suppressed, incorporated in Oristano) - Italy

1503

Sorres (suppressed, incorporated in Sassari) - Italy

1503?

Fordongianus (suppressed, incorporated in Oristano) - Italy

1503?

Ottana (suppressed, incorporated in / Othana - Italy

1511

Saluzzo / Salutiae (detached from Mondovì) - Italy

1513

Sant'Angelo dei Lombardi e Bisaccia (united) - Italy

1515

Borgo San Sepolcro, Sansepolcro / Biturgia (detached from Arezzo) - Italy

1515

Lanciano (detached from Chieti) - Italy

1515

Torino (Metr., was part of the Metropolitan Province of Milano) - Italy

1518

Alessano (united to Lecce) - Italy

1519

Pescia / Piscia (territorial Prepositure, detached from Lucca) - Italy

1521

Sabina / the two Sabinas (new name, previously Vescovio) - Italy

1521

San Leone (de facto abandoned after about this time) - Italy

1525

Campagna - Italy

1525

Satriano (incorporated in Campagna "aeque principaliter") - Italy

1526

Chieti (Metr.) - Italy

1528

Melfi e Rapolla (united) - Italy

1528

Montalcino (detached from Pienza e Montalcino) - Italy

1528

Pienza (new name, previously Pienza e Montalcino, Montalcino detached) - Italy

1530

Vigevano / Viglebanum - Italy (detached from Novara, and from other dioceses) - Italy

1545

Anglona-Tursi (new name, previously Anglona) - Italy

1547

Salpi (suppressed, incorporated in Trani) - Italy

1561

Montepulciano (detached from Arezzo) - Italy

1562

Lanciano (Metr.) - Italy

1563

Urbino (Metr.) - Italy

1570

Ortona (reerected) - Italy

1571

Ripatransone (detached from Fermo, and from Abb. of Farfa) - Italy

1572

Alessano / Alexanum (re-established) - Italy

1579

Crema (detached from Cremona and other D) - Italy

1580

San Severo (revived with new name, previously Civitate??) - Italy

1582

Bologna (Metr.) - Italy

1586

Macerata e Tolentino (united) - Italy

1586

Loreto / Lauretum - Italy

1586

Montalto (detached from Fermo) - Italy

1586

San Severino (revived, new name, previously Septempeda, detached from Tolentino ?) - Italy

1589

Fermo (Metr.) - Italy

1591

Brindisi / Brundusium (previously Brindisi e Oria) - Italy

1591

Oria / Uria (separated from Brindisi e Oria) - Italy

1592

Recanati e Loreto (united) - Italy

1592

Colle di Val d'Elsa - Italy

1592

Fossano - Italy

1600

Campli (detached from Ortona) - Italy

1600

Città della Pieve (Castel(lo) della Pieve) / Civitas Plebis (maybe the revival/continuation of a diocese of another name which existed in the 2.-4.th century) - Italy

1601

Borgo San Donnino - Italy

1603

Ravello (in personal union with Scala) - Italy

1622

San Miniato [al Tedesco] (detached from Lucca) - Italy

1649

Castro [del Lazio] (suppressed) - Italy

1649

Acquapendente (detached from Orvieto, and from the suppressed diocese of Castro) - Italy

1653

Pistoia e Prato (united) - Italy

1656 (or 1635, 1636)

Urbania e Sant'Angelo in Vado (erected and united, Sant'Angelo revives the ancient diocese of Tifernum Metaurum) - Italy

1699

San Vicenzo al Volturno (Abb., incorporated in Montecassino) - Italy

1725

Cingoli (incorporated in Osimo) - Italy

1725

Osimo e Cingoli (united) - Italy

1725

Pontecorvo - Italy

1726

Lucca (AD) - Italy

1726

Pescia (D, previously territorial Prelature) - Italy

1728

Fabriano - Italy

1735

Ferrara (AD) - Italy

1748

Pinerolo / Pinerolium (detached from Torino; includes the Protestant Valdensian valleys of Val Chisone and Val Germanasca) - Italy

1751

Gorizia (Metr.) - Italy

1751-1752

Udine (Metr.) - Italy

1763

Iglesias (reestablished) - Italy

1772

Biella / Bugella (detached from Vercelli) - Italy

1772

Chiusi e Pienza (united) - Italy

1772

Oulx (incorporated in Susa) - Italy

1772

Susa / Segusium (detached from Torino, and also incorporating the Prepositure of Oulx) - Italy

1779

Carpi - Italy

1779

Galtellì-Nuoro (new name, previously Galtellì) - Italy

1784

Pedena / Pican (suppressed and incorporated in Trieste, in Capodistria, and in Gorizia in the new D of Gradisca) - (Venetian Republic, Austria, Italy) Croatia

1785

Fabriano e Matelica (united, Matelica reestablished) - Italy

1787

Camerino (AD) - Italy

1787

Gradisca (new name, See transferred from Trieste, and with territories from the suppressed Gorizia, and Pedena) - Italy

1791

Gorizia e Gradisca (Metr., united) - Italy

1791

Trieste / Trst (reerected, detached from Gradisca, including the former territory of Pedena / Pican) (Venetian Republic, Austria, parts of Slovenia and Croatia) Italy (to be also added to Italy)

1797

Pontremoli (detached from Luni e Sarzana) - Italy

1798?

Trevico (incorporated in Lacedonia) - Italy

1803

Aosta (suppressed) - Italy

1804

Bisarcio (reestablished) - Italy

1804

Ravello (suppressed, incorporated in Amalfi) - Italy

1805

Civita Castellana, Orte e Gallese (united, Gallese added) - Italy

1806

Livorno - Italy

1815

Capri (suppressed, incorporated in Sorrento?) - Italy

1816

Caltagirone / Calatayeronium (detached from Catania, and from Messina) - Italy

1816

Santissimo Salvatore Maggiore (united with Messina) - Italy

1817

Aosta (reestablished) - Italy

1817

Vercelli (Metr., was part of the Metropolitan Province of Torino) - Italy

1817

Cuneo / Cuneum (detached from Mondovì) - Italy

1817

Nicosia / Herbita, Nicosia Herbitensis (detached from Catania) - Italy

1817

Piazza Armerina / Platia (detached from Catania) - Italy

1817

Treia - Italy

1818

Acerenza (Metr., Matera suppressed) - Italy

1818

Acerno (incorporated in Salerno) - Italy

1818

Acerra (incorporated in Sant'Agata de' Goti) - Italy

1818

Alessano (incorporated in Ugento) - Italy

1818

Alife (suppressed) - Italy

1818

Aquino, Sora and Pontecorvo (united) - Italy

1818

Avellino (previously Avellino e Frigento, Frigento suppressed) - Italy

1818

Belcastro (suppressed, incorporated in Santa Severina) - Italy

1818

Belluno e Feltre (united) - Italy

1818

Bisceglie (incorporated in Trani) - Italy

1818

Bitonto e Ruvo (united) - Italy

1818

Caiazzo (incorporated in Caserta) - Italy

1818

Campli (suppressed, incorporated in Teramo) - Italy

1818

Castro di Puglia (suppressed, incorporated in Otranto) - Italy

1818

Carinola (suppressed, incorporated in Sessa Aurunca) - Italy

1818

Cava e Sarno (united) - Italy

1818

Cerenzia (suppressed, incorporated in Santa Severina) - Italy

1818

Cittaducale / Città Ducale (incorporated in L'Aquila) - Italy

1818

Concordia ("new" name, Caorle not an alternative name any more) - Italia

1818

Conza e Campagna (united) - Italy

1818

Cosenza (AD, previously Metr.) - Italy

1818

Fondi (suppressed, incorporated in Gaeta) - Italy

1818

Gravina e Irsina (united, and new name of Irsina, which was previously Montepeloso) - Italy

1818

Guardialfiera (suppressed, incorporated in Termoli) - Italy

1818

Isola (suppressed, incorporated in Santa Severina) - Italy

1818

Lettere-Gragnano (suppressed, incorporated in Stabia) - Italy

1818

Massa Lubrense (suppressed, incorporated in Sorrento) - Italy

1818

Martirano / Martoranum (suppressed, incorporated in Nicastro) - Italy

1818

Minervino / Minervino Murge (suppressed, incorporated in Andria) - Italy

1818

Minori (suppressed, incorporated in Amalfi) - Italy

1818

Montemarano (suppressed, incorporated in Nusco) - Italy

1818

Monteverde (suppressed, incorporated in Sant'Angelo dei Lombardi) - Italy

1818

Mottola (suppressed, incorporated in Castellaneta) - Italy

1818

Nicotera e Tropea (united) - Italy

1818

Nocera de' Pagani (suppressed) - Italy

1818

Polignano (suppressed, incorporated in Monopoli) - Italy

1818

Potenza e Marsico Nuovo (united) - Italy

1818

San Marco e Bisignano (united) - Italy

1818

Scala (suppressed, incorporated in Amalfi) - Italy

1818

Strongoli / Petelia (suppressed, incorporated in Santa Severina) - Italy

1818

Sulmona e Valva (united) - Italy

1818

Teano-Calvi (united) - Italy

1818

Torcello (suppressed, incorporated in Venezia) - Italy

1818

Udine (D, previously Metr.) - Italy

1818

Umbriatico (suppressed, incorporated in Santa Severina) - Italy

1818

Vico Equense (suppressed, incorporated in Sorrento) - Italy

1818

Vieste (in perpetual administration by [de facto incorporated in] Manfredonia) - Italy

1818

Vulturara / Vulturaria (suppressed, incorporated in Lucera) - Italy

1818~

San Leo (suppressed, incorporated in Santa Severina) - Italy

1819

Ascoli Satriano (united with Cerignola) - Italy

1819

Cagli e Pergola (Pergola erected, and united) - Italy

1819

Cerignola (new) e Ascoli Satriano - Italy

1820

Alife (reestablished, but immediately incorporated in Telese) - Italy

1820

Luni, Sarzana e Brugnato (Luni e Sarzana united with Brugnato) - Italy

1820

Nonantola (Abb., incorporated in Modena) - Italy

1820

Savona e Noli (united) - Italy

1821

Norcia (reestablished, detached from Spoleto) - Italy

1821

Ostuni (incorporated in Brindisi AD) - Italy

1821

Spoleto (AD) - Italy

1822

Acerenza-Matera (Metr., title and co-cathedral of Matera reestablished) - Italy

1822

Massa Carrara (previously Abb.) - Italy

1824

Ogliastra / Oleastra (detached from Cagliari [Web], see first in Tortolì and since 1927 in Lanusei) - Italy

1825

Civitavecchia (reestablished, detached from Viterbo) - Italy

1828

Arbe / Rab (incorporated in Vaglia / Krk) - (Venetian Republic, Hungary, Yugoslavia) Croatia

1828 (decreed) / 1831 (realized at the death of the last bishop)

Cittanova d'Istria / Aemonia / Novigrad (abolished and incorporated into Capodistria, united with Trieste) - (Venetian Republic, Hungary, Yugoslavia) Croatia

1828

Guastalla - Italy

1828

Nazareth (this is the Nazareth of the Holy Land - the title incorporated in Trani) - Holy Land / Italy

1828

Ossero / Osor (incorporated in Vaglia / Krk) - (Venetian Republic, Hungary, Yugoslavia) Croatia

1828

Parenzo e Pola / Porec i Pula (united ae. pr.) - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia

1828

Pedena / Pican (incorporated into Trieste-Capodistria) - (Venetian Republic, Austria, Italy) Croatia

1828

Pola / Pula (united ae. pr. with Parenzo / Porec) - (Venetian Rep., Austria, Italy, Yugoslavia) Croatia (to be also added to Italy)

1828

Trieste e Capodistria / Trst i Koper (Croat: Kopar) (united ae. pr., including the suppressed D of Pedena / Pic'an and since 1831 the D of Novigrad / Cittanova) - (Venetian Republic, Austria, Yugoslavia, parts of Slovenia and Croatia)

1830

Trieste e Capodistria / Trst i Koper (Croat: Kopar) (merged) - (Venetian Republic, Austria, Yugoslavia, parts of Slovenia and Croatia)

1932

Zadar / Zara (AD) - (Venetian Rep., Austria, Italy, Jugoslavia) Croatia

1834

Lanciano e Ortona (Metr., united) - Italy

1834

Nocera de' Pagani (restored) - Italy

1834

Atina (territorial Prepositure incorporated in Montecassino) - Italy

1836

Ampurias (suppressed, incorporated in Tempio) - Italy

1836

Ampurias e Tempio (new name, Tempio was previously Civita) - Italy

1841

Farfa (Abb., incorporated in Sabina) - Italy

1841

Poggio Mirteto (detached from Sabina, from Rieti, and incorporating the suppressed Abb. San Salvatore Maggiore) - Italy

1841

San Salvatore Maggiore (territorial Abb., incorporated in Poggio Mirteto) - Italy

1844

Siracusa (Metr.) - Italy

1844

Acireale (detached from Catania, and from Messina) - Italy

1844

Caltanissetta (detached from Agrigento)- Italy

1844

Noto (detached from Siracusa) - Italy

1844

Trapani / Drepanum (detached from Mazara del Vallo) - Italy

1846-1878

Caiazzo (reerected, detached from Caserta during the reign of Pius IX) - Italy

1847

Udine (Metr. without suffragans) - Italy

1848

Altamura e Acquaviva delle Fonti (Acquaviva delle Fonti [Prel] erected and immediately united to Altamura) - Italy

1848

Gaeta (AD) - Italy

1850

Diano-Teggiano (detached from Capaccio) - Italy

1850

Modigliana - Italy

1851

Capaccio-Vallo (new name, previously Capaccio) - Italy

1852

Alife (detached from Telese) - Italy

1852

Isernia e Venafro (united) - Italy

1853

Chieti (Metr.) e Vasto (united) - Italy

1854

Civitavecchia e Tarquinia (united, Tarquinia new name, previously Corneto Tarquinia) - Italy

1855

Acerra (D, reestablished, detached from Sant'Agata de' Goti) - Italy

1855

Foggia (detached from Troia) - Italy

1855

Modena (Metr.) - Italy

1859

Catania (AD) - Italy

1860

Trani (Metr.) e Barletta (united, Barletta added) - Italy

1876

L'Aquila (AD) - Italy

1882

Perugia (AD) - Italy

1883

Santissimo Salvatore (Archimanditate [formerly of Byz. Rite] incorporated in Messina) - Italy

1892

Fontevivo (Abb., incorporated in Parma) - Italy

1892

Chiavari (detached from Genova) - Italy

1904

Ancona (AD, previously D) e Numana - Italy

1907

Terni e Narni (united) - Italy

1908

Lucera e Troia (united) - Italy

1910

San Michele Arcangelo di Montescaglioso (Abb., incorporated in Matera) - Italy

1914

Velletri (detached from Ostia) - Italy

1915

Ozieri (new name, previously Bisarchio) - Italy

1919

Lungro / in Albanian: Ungër, or L'Úngro [It.-Alb.] (detached from Cassano all'Ionio, from San Marco e Bisignano, and from Rossano) - Italy  

1920

Santa Maria di Polsi (Abb.Comm., incorporated in Gerace) - Italy

1920

Treia (incorporated in San Severino) - Italy

1920

Fiume / Rijeka (AA) - (Italy) Croatia

1921

Campagna (detached from Conza e Campagna) - Italy

1921

Conza (Metr.) Sant'Angelo dei Lombardi e Bisaccia (united) - Italy

1923

San Colombano (Abb. title revived, incorporated in Bobbio) - Italy

1925

Fiume / Rijeka - (Italy) Croatia

1925

Sabina-Poggio Mirteto (united) - Italy

1925

Italy (Mil.Ord.) - Italy

1926

Bagnoregio / Bagnorea (incorporated in Acquapendente) - Italy

1926

Beatissima Vergine Maria del Santissimo Rosario (AA, detached from Nola) - Italy

1927

Agrigento (new name. previously Girgenti) - Italy

1927

Boiano-Campobasso (new name, previously Boiano) - Italy

1927

Catanzaro (AD) - Italy

1927

Fidenza (new name, previously Borgo San Donnino) - Italy

1928

Crotone (the alternative name variant Cotrone abolished) - Italy

1928

Monteleone Calabro (suppressed) - Italy

1928

Nuoro (new name, previously Galtellì-Nuoro) - Italy

1929

Luni / La Spezia, Sarzana e Brugnato (new name, "La Spezia" added to name) - Italy

1929

Trento (AD) - Italy

1934

Recanati (new name, previously Recanati e Loreto) - Italy

1935

Loreto (AA) - Italy

1936

San Martino al Monte Cimino (Abb., incorporated in Viterbo) - Italy

1937

Piana del Greci /in Albanian: Hora, or Qana [It.-Alb.] (detached from Monreale, and from Palermo) - Italy

1937

Santa Maria di Grottaferrata (Abb., Byz./It.-Alb.]) - Italy

1939

Apuania (new name, previously Massa Carrara) - Italy

1939

Vittorio Veneto (new name, previously Ceneda) - Italy

1940

Chieti e Istonio (Metr., new name, previously Chieti e Vasto, Istonio was previously Vasto) - Italy

1941

Piana degli Albanesi /in Albanian: Hora, or Qana [It.-Alb.] (new name, previously Piana del Greci) - Italy

1945

Vallo di Lucania (new name, previously Capaccio-Vallo) - Italy

1947

Ravenna (Metr.) e Cervia (united) - Italy

1948

Chieti (Metr., Istonio detached) - Italy

1948

Vasto (D, detached from Chieti e Istonio, Istonio being the latinized name of Vasto 1938-1944) - Italy

1949

Penne-Pescara (new name, previously Penne e Atri) - Italy

1949

Teramo e Atri (united) - Italy

1950

Ragusa e Siracusa (united) - Italy

1951

Pompei / Beatissima Vergine Maria del SS.mo Rosario (Prel., and new name, previously Beatissima Vergine Maria del SS.mo Rosario) - Italy

1952

Santa Severina (AD, previously Metr.) - Italy

1954

Acerenza (Metr., new name, previously Acerenza-Matera) - Italy

1954

Gerace-Locri (transf. and new name, previously Gerace) - Italy

1954

Matera (Metr., detached from Acerenza-Matera) - Italy

1954

Pistoia (new name, Prato detached) - Italy

1954

Prato (detached from Pistoia e Prato) - Italy

1955

Ragusa (detached from Ragusa e Siracusa) - Italy

1955

Siracusa (new name, previously Ragusa e Siracusa) - Italy

1956

Veroli-Frosinone (new name, previously Veroli) - Italy

1959

Ugento-Santa Maria di Leuca (new name, previously Ugento) - Italy

1964

Bolzano-Bressanone / Bozen-Brixen (new name, previously Bressanone / Brixen) - Italy

1964

Pomposa (Abb., incorporated in Comacchio) - Italy

1964

Trento (Metr., previously AD) - Italy

1965

Loreto (Prel.) - Italy

1967

Terracina-Latina, Priverno e Sezze (new name, previously Terracina, etc.) - Italy

1971

Concordia-Pordenone (new name, previously Concordia) - Italy

1972

Ancona (Metr., previously AD) and Numana) - Italy

1876

L'Aquila (Metr., previously AD) - Italy

1872

Perugia (Metr., previously AD) - Italy

1973

Albenga-Imperia (new name, previously Albenga) - Italy

1973

Boiano-Campobasso (AD) - Italy

1973

Potenza (AD) - Italy

1975

Ancona (Metr., new name, previously Ancona e Numana) - Italy

1975

La Spezia, Sarzana e Brugnato (new name, Luni dropped) - Italy

1975

Ventimiglia-San Remo (new name, previously Ventimiglia) - Italy

1976

Acerenza (D, previously Metr.) - Italy

1976

Boiano-Campobasso (Metr., previously AD) - Italy

1976

Matera e Irsina (Matera now D [previously Metr.], and united with Irsina, detached from Gravina) - Italy

1976

Potenza (Metr., previously AD) - Italy

1976

Tursi-Lagonegro (new name, previously Anglona-Tursi) - Italy

1977

Acerenza (AD, previously D) - Italy

1977

Matera e Irsina (AD, previously D) - Italy

1977

San Marino-Montefeltro (new name, previously Montefeltro) - Italy

1977

Trieste (detached: Koper) - Italy

1978

Massa Marittima-Piombino (new name, previously Massa Marittima) - Italy

1979

Capua (AD, previously Metr.) - Italy

1979

Conza (AD, previously Metr.), Sant'Angelo dei Lombardi e Bisaccia (united) - Italy

1979

Cosenza e Bisignano (united, and San Marco Argentano at the same time detached) - Italy

1979

Foggia (Metr., was immediately subject to the Apostolic See) - Italy

1979

Manfredonia (AD, previously Metr.) - Italy

1979

Oppido Mamertina-Palmi (new name, previously Oppido Mamertina) - Italy

1979

Rossano e Cariati (united) - Italy

1979

San Marco Argentano - Scalea (new name, previously San Marco Argentano) - Italy

1979

Sorrento (AD, previously Metr.) - Italy

1980

Brindisi e Ostuni (AD, previously Metr.) - Italy

1980

Lecce (Metr.) - Italy

1980

Otranto (AD, previously Metr.) - Italy

1980

Trani e Barletta (AD, previously Metr.) - Italy

1981

San Paolo fuori le Mura (is completely deprived of territory, but remains territorial Abb., so that the Abbot is still member of the Italian Bishops' Conference) - Italy

1981

Santi Vincenzo ed Anastasio alle Tre Fontane (territorial Abb.; suppressed; its territory was attached mainly to Sovana-Pitigliano-Orbetello, and also to Civita Castellana and Nepi)

1981

Sovana-Pitigliano-Orbetello (new name, previously Sovana-Pitigliano, enlarged with most of the territory of the Abb. of Santi Vincenzo ed Anastasio around Orbetello) - Italy

1981

Velletri e Segni (united) - Italy

1982

Bitonto (new name, after Ruvo detached) - Italy

1982

Campobasso-Boiano (Metr., new name, previously Boiano-Campobasso) - Italy

1982

Chieti e Vasto (Metr., united) - Italy

1982

Ruvo (detached from Bitonto) - Italy

1982

Pescara-Penne (Metr., new name, previously Pescara) - Italy

1983

Ripatransone-San Benedetto del Tronto (new name, previously Ripatransone) - Italy

1983

Terni, Narni e Amelia (united Terni e Narni with Amelia) - Italy

1985

Macerata-Tolentino-Recanati-Cingoli-Treia (united) - Italy

1986

Acquapendente (incorporated in Viterbo) - Italy

1986

Adria - Rovigo (new name, previously Adria) - Italy

1986

Ales-Terralba (new name, previously Ales e Terralba) - Italy

1986

Alghero-Bosa (united) - Italy

1986

Alife-Caiazzo (united) - Italy

1986

Altamura-Gravina-Acquaviva delle Fonti (united) - Italy

1986

Amalfi-Cava de'Tirreni (AD, united, Sarno detached from Cava and united with Nocera Inferiore) - Italy

1986

Anagni-Alatri (united) - Italy

1986

Ancona-Osimo (Metr., united) - Italy

1986

Arezzo-Cortona-Sansepolcro (united) - Italy

1986

Ariano Irpino-Lacedonia (united) - Italy

1986

Assisi-Nocera Umbra-Gualdo Tadino (united) - Italy

1986

Avezzano (new name, previously Marsi) - Italy

1986

Bagnoregio (incorporated in Viterbo) - Italy

1986

Bari-Bitonto (Metr., united) - Italy

1986

Belluno-Feltre (new name, previously Belluno e Feltre) - Italy

1986

Brindisi-Ostuni (AD, new name, previously Brindisi e Ostuni AD) - Italy

1986

Camerino-San Severino Marche (united, and San Severino new name: Marche added) Italy

1986

Catanzaro-Squillace (AD, united) - Italy

1986

Cerignola-Ascoli Satriano (new name, previously Cerignola e Ascoli Satriano) - Italy

1986

Cerreto Sannita-Telese-Sant'Agata de' Goti (united) - Italy

1986

Cesena-Sarsina (united) - Italy

1986

Chieti-Vasto (Metr., new name, previously Chieti e Vasto) - Italy

1986

Civita Castellana (new name, previously Civita Castellana, Orte e Gallese; to which were also united Nepi e Sutri) - Italy

1986

Civitavecchia-Tarquinia (new name, previously Civitavecchia e Tarquinia) - Italy

1986

Conversano-Monopoli (united) - Italy

1986

Cosenza-Bisignano (new name, previously Cosenza e Bisignano) - Italy

1986

Crotone-Santa Severina (AD, united) - Italy

1986

Fabriano-Matelica (new name, previously Fabriano e Matelica) - Italy

1986

Faenza-Modigliana (united) - Italy

1986

Fano-Fossombrone-Cagli-Pergola (united: Fano, Fossombrone, Cagli e Pergola) - Italy

1986

Ferrara-Comacchio (AD, united) - Italy

1986

Foggia-Bovino (Metr., united) - Italy

1986

Forlì-Bertinoro (united) - Italy

1986

Frosinone-Veroli-Ferentino (united: Veroli-Frosinone, and Ferentino) - Italy

1986

Genova-Bobbio (Metr., united) - Italy

1986

Gorizia (Metr., new name, previously Gorizia e Gradisca [Metr.]) - Italy

1986

Isernia-Venafro (new name, previously Isernia e Venafro) - Italy

1986

Lamezia Terme (new name, previously Nicastro) - Italy

1986

Lanciano-Ortona (AD, previously Metr., and new name, previously Lanciano e Ortona [Metr.]) - Italy

1986

Lanusei (new name, previously Ogliastra) - Italy

1986

La Spezia-Sarzana-Brugnato (new name, previously La Spezia, Sarzana e Brugnato) - Italy

1986

Latina-Terracina-Sezze-Priverno (new name, previously Terracina-Latina, Priverno e Sezze) - Italy

1986

Locri-Gerace (new name, previously Gerace-Locri) - Italy

1986

Lucera-Troia (united) - Italy

1986

Manfredonia-Vieste (AD, new name, previously Manfredonia e Vieste AD) - Italy

1986

Massa (new name, previously Apuania) - Italy

1986

Matera-Irsina (AD, new name, previously Matera e Irsina) - Italy

1986

Melfi-Rapolla-Venosa (united, Melfi e Rapolla, and Venosa)- Italy

1986

Messina-Lipari-Santa Lucia del Mela (united) - Italy

1986

Mileto-Nicotera-Tropea (united, Mileto, and Nicotera e Tropea) - Italy

1986

Modena-Nonantola (united) - Italy

1986

Molfetta-Ruvo-Giovinazzo-Terlizzi (united Molfetta-Giovinazzo-Terlizzi with Ruvo) - Italy

1986

Montefiascone (incorporated in Viterbo) - Italy

1986

Montepulciano-Chiusi-Pienza (united) - Italy

1986

Nardò-Gallipoli (united) - Italy

1986

Nocera Inferiore-Sarno (united, and Nocera Inferiore is a new name, previously Nocera de' Pagani) - Italy

1986

Orvieto-Todi (united) - Italy

1986

Perugia-Città della Pieve (Metr., united) - Italy

1986

Pitigliano-Sovana-Orbetello (new name, previously Sov.-Pit.-Orb.) - Italy

1986

Porto-Santa Rufina (united, previously Porto e Santa Rufina) - Italy

1986

Potenza-Muro Lucano-Marsico Nuovo (Metr., united, previously Potenza-Marsico Nuovo, and Muro Lucano) - Italy

1986

Ravenna-Cervia (Metr., new name, previously Ravenna [Metr.] e Cervia) - Italy

1986

Reggio Calabria-Bova (united) - Italy

1986

Reggio Emilia-Guastalla (united) - Italy

1986

Rossano-Cariati (new name, previously Rossano e Cariati) - Italy

1986

Salerno-Campagna-Acerno (Metr., reorganized and united Salermo-Acerno with Campagna) - Italy

1986

San Benedetto del Tronto-Ripatransone-Montalto (united) - Italy

1986

Sant'Angelo dei Lombardi-Conza-Nusco-Bisaccia (AD, and united Conza, Sant'Angelo dei Lombardi, and Bisaccia [Conza Metr., united in 1913 and 1921] with Nusco) - Italy

1986

Savona-Noli (new name, previously Savona e Noli) - Italy

1986

Siena-Colle di Val d'Elsa-Montalcino (Metr., united: Siena, and Colle di Val d'Elsa, and Montalcino) - Italy

1986

Sora-Aquino-Pontecorvo (new name, previously Aquino, Sora e Pontecorvo) - Italy

1986

Sorrento-Castellammare di Stabia (AD, united) - Italy

1986

Spoleto-Norcia (AD, united) - Italy

1986

Sulmona-Valva (new name, previously Sulmona e Valva) - Italy

1986

Teggiano-Policastro (united, Teggiano with new name, previously Diano-Teggiano) - Italy

1986

Tempio-Ampurias (new name, previously Ampurias e Tempio) - Italy

1986

Teramo-Atri (new name, previously Teramo e Atri) - Italy

1986

Termoli-Larino (united) - Italy

1986

Terni-Narni-Amelia (new name, previously, Terni, Narni e Amelia) - Italy

1986

Trani-Barletta-Bisceglie (united) - Italy

1986

Urbino-Urbania-Sant'Angelo in Vado (Metr., united) - Italy

1986

Vallo della Lucania (new name, previously Vallo di Lucania) - Italy

1986

Velletri-Segni (new name, previously Velletri e Segni) - Italy

1988

Massa Carrara-Pontremoli (united, and new name for Massa) - Italy

1989

Genova (Metr., new name, previously Genova-Bobbio) - Italy

1989

Piacenza-Bobbio (Bobbio detached from Genova and added) - Italy

2000

Agrigento (Metr.) - Italy

2000

Catania (Metr., previously AD) - Italy

2000

Monreale (AD, previously Metr.) - Italy

2000

Pesaro (Metr.) - Italy

2000

Urbino-Urbania-Sant'Angelo in Vado (AD, previously Metr.) - Italy

2001

Catanzaro-Squillace (Metr., previously AD) - Italy

2001

Cosenza-Bisignano (Metr., previously AD) - Italy~

2002

Manfredonia-Vieste-San Giovanni Rotondo (new name, previously Manfredonia-Vieste) - Italy

2005

San Paolo fuori le Mura (Abb., suppressed and territory incorporated into Roma) - Italy

2023

Cuneo-Fossano (D., united, and new name, previously Cuneo (D.) and Fossano D) -Italy