List of Catholic dioceses in Italy

The following is the List of the Catholic dioceses in Italy. As of May 2017^[update], the Catholic Church in Italy is divided into sixteen ecclesiastical regions. While they are similar to the 20 civil regions of the Italian state, there are some differences. Most ecclesiastical regions are in turn divided into a number of ecclesiastical provinces. The provinces are in turn divided into a number of dioceses. The sovereign state of Vatican City is part of the metropolitan province of Rome. A metropolitan bishop exercises a degree of leadership over a group of dioceses that are loosely subject (suffragan) to the care of the metropolitan see. This list excludes those archdioceses, dioceses and ecclesiastical territories that are immediately subject to the Holy See.

There are 227 sees ('particular churches'), most of which are dioceses led by a bishop. A diocese that is led by an archbishop is known as an archdiocese. There are 40 Metropolitan archdioceses which serve as the seat of an ecclesiastical province. This number includes the Holy See and the Patriarchate of Venice. There are also four archdioceses which are non-metropolitan, having been demoted by papal decree. This brings the number of archbishops in Italy and Vatican City to 44 (i.e. 40 + 4).

All the sees belong to the Latin Church apart from three Eastern Catholic sees of the Italo-Albanian Catholic Church that use the Byzantine Rite in the Albanian language. All sees of the Latin Church use the Roman Rite apart from the Metropolitan Archdiocese of Milan, which mainly uses the Ambrosian Rite.

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The following are immediately Subject to the Holy See, despite not being in the Pope's Ecclesiastical Province of Rome.

• non-Metropolitan Archdiocese of Lucca
• non-Metropolitan Archdiocese of Spoleto-Norcia
• Diocese of Orvieto-Todi
• Diocese of Terni-Narni-Amelia
• Territorial Abbey of Monte Oliveto Maggiore
• Military Ordinariate of Italy
• Personal Prelature of Opus Dei

(Byzantine Rite, the only non-Latin dioceses in Italy)

• Eparchy of Lungro
• Eparchy of Piana degli Albanesi
• Territorial Abbacy of Santa Maria of Grottaferrata

The ecclesiastical provinces of L'Aquila, Chieti-Vasto and Pescara-Penne are mainly situated in the civil region of Abruzzo while Campobasso-Boiano is situated in Molise.

• Archdiocese of L'Aquila
  • Diocese of Avezzano
  • Diocese of Sulmona-Valva

• Metropolitan Archdiocese of Chieti-Vasto
  • Archdiocese of Lanciano-Ortona

• Archdiocese of Pescara-Penne
  • Diocese of Teramo-Atri

• Metropolitan Archdiocese of Campobasso-Boiano
  • Diocese of Isernia-Venafro
  • Diocese of Termoli-Larino
  • Diocese of Trivento

• Archdiocese of Potenza-Muro Lucano-Marsico Nuovo
  • Archdiocese of Acerenza
  • Archdiocese of Matera-Irsina
  • Diocese of Melfi-Rapolla-Venosa
  • Diocese of Tricarico
  • Diocese of Tursi-Lagonegro

• Archdiocese of Reggio Calabria-Bova
  • Diocese of Locri-Gerace
  • Diocese of Mileto-Nicotera-Tropea
  • Diocese of Oppido Mamertina-Palmi

• Metropolitan Archdiocese of Catanzaro-Squillace
  • Archdiocese of Crotone-Santa Severina
  • Diocese of Lamezia Terme

• Metropolitan Archdiocese of Cosenza-Bisignano
  • Archdiocese of Rossano-Cariati
  • Diocese of Cassano all'Jonio
  • Diocese of San Marco Argentano-Scalea

• Metropolitan Archdiocese of Salerno-Campagna-Acerno
  • Archdiocese of Amalfi-Cava de' Tirreni
  • Diocese of Nocera Inferiore-Sarno
  • Diocese of Teggiano-Policastro
  • Diocese of Vallo della Lucania
  • Territorial Abbey of Santissima Trinità di Cava de' Tirreni

• Metropolitan Archdiocese of Benevento
  • Archdiocese of Sant'Angelo dei Lombardi-Conza-Nusco-Bisaccia
  • Diocese of Ariano Irpino-Lacedonia
  • Diocese of Avellino
  • Diocese of Cerreto Sannita-Telese-Sant’Agata de’ Goti
  • Territorial Abbey of Montevergine

• Metropolitan Archdiocese of Naples
  • Archdiocese of Capua
  • Archdiocese of Sorrento-Castellammare di Stabia
  • Diocese of Acerra
  • Diocese of Alife-Caiazzo
  • Diocese of Aversa
  • Diocese of Caserta
  • Diocese of Ischia
  • Diocese of Nola
  • Diocese of Pozzuoli
  • Diocese of Sessa Aurunca
  • Diocese of Teano-Calvi
  • Territorial Prelature of Pompei o Beatissima Vergine Maria del SS.mo Rosario

• Metropolitan Archdiocese of Bologna
  • Archdiocese of Ferrara-Comacchio
  • Diocese of Faenza-Modigliana
  • Diocese of Imola

• Metropolitan Archdiocese of Modena-Nonantola
  • Diocese of Carpi
  • Diocese of Fidenza
  • Diocese of Parma
  • Diocese of Piacenza-Bobbio
  • Diocese of Reggio Emilia-Guastalla

• Archdiocese of Ravenna-Cervia
  • Diocese of Cesena-Sarsina
  • Diocese of Forli-Bertinoro
  • Diocese of Rimini
  • Diocese of San Marino-Montefeltro

• Diocese of Rome
  • Suburbicarian See of Albano
  • Suburbicarian See of Frascati
  • Suburbicarian See of Palestrina
  • Suburbicarian See of Porto-Santa Rufina
  • Suburbicarian See of Sabina-Poggio Mirteto
  • Suburbicarian See of Velletri-Segni
  • Archdiocese of Gaeta
  • Diocese of Anagni-Alatri
  • Diocese of Civita Castellana
  • Diocese of Civitavecchia-Tarquinia
  • Diocese of Frosinone-Veroli-Ferentino
  • Diocese of Latina-Terracina-Sezze-Priverno
  • Diocese of Rieti
  • Diocese of Sora-Aquino-Pontecorvo
  • Diocese of Tivoli
  • Diocese of Viterbo
  • Territorial Abbey of Montecassino
  • Territorial Abbey of Subiaco

• Metropolitan Archdiocese of Genoa
  • Diocese of Albenga-Imperia
  • Diocese of Chiavari
  • Diocese of La Spezia-Sarzana-Brugnato
  • Diocese of Savona-Noli
  • Diocese of Tortona
  • Diocese of Ventimiglia-San Remo

• Metropolitan Archdiocese of Milan
  • Diocese of Bergamo
  • Diocese of Brescia
  • Diocese of Como
  • Diocese of Crema
  • Diocese of Cremona
  • Diocese of Lodi
  • Diocese of Mantua
  • Diocese of Pavia
  • Diocese of Vigevano

• Metropolitan Archdiocese of Ancona-Osimo
  • Diocese of Fabriano-Matelica
  • Diocese of Jesi
  • Diocese of Senigallia
  • Territorial Prelature of Loreto

• Metropolitan Archdiocese of Fermo
  • Archdiocese of Camerino-San Severino Marche
  • Diocese of Ascoli Piceno
  • Diocese of Macerata-Tolentino-Recanati-Cingoli-Treia
  • Diocese of San Benedetto del Tronto-Ripatransone-Montalto

• Metropolitan Archdiocese of Pesaro
  • Archdiocese of Urbino-Urbania-Sant'Angelo in Vado
  • Diocese of Fano-Fossombrone-Cagli-Pergola

• Metropolitan Archdiocese of Turin
  • Diocese of Acqui
  • Diocese of Alba Pompeia
  • Diocese of Aosta
  • Diocese of Asti
  • Diocese of Cuneo
  • Diocese of Fossano
  • Diocese of Ivrea
  • Diocese of Mondovi
  • Diocese of Pinerolo
  • Diocese of Saluzzo
  • Diocese of Susa

• Metropolitan Archdiocese of Vercelli
  • Diocese of Alessandria della Paglia
  • Diocese of Biella
  • Diocese of Casale Monferrato
  • Diocese of Novara

• Metropolitan Archdiocese of Bari-Bitonto
  • Archdiocese of Trani-Barletta-Bisceglie
  • Diocese of Altamura-Gravina-Acquaviva delle Fonti
  • Diocese of Andria
  • Diocese of Conversano-Monopoli
  • Diocese of Molfetta-Ruvo-Giovinazzo-Terlizzi

• Metropolitan Archdiocese of Foggia-Bovino
  • Archdiocese of Manfredonia-Vieste-S. Giovanni Rotondo
  • Diocese of Cerignola-Ascoli Satriano
  • Diocese of Lucera-Troia
  • Diocese of San Severo

• Metropolitan Archdiocese of Lecce
  • Archdiocese of Brindisi-Ostuni
  • Archdiocese of Otranto
  • Diocese of Nardò-Gallipoli
  • Diocese of Ugento-Santa Maria di Leuca

• Metropolitan Archdiocese of Taranto
  • Diocese of Castellaneta
  • Diocese of Oria

• Metropolitan Archdiocese of Cagliari
  • Diocese of Iglesias
  • Diocese of Lanusei
  • Diocese of Nuoro

• Metropolitan Archdiocese of Oristano
  • Diocese of Ales-Terralba

• Metropolitan Archdiocese of Sassari
  • Diocese of Alghero-Bosa
  • Diocese of Ozieri
  • Diocese of Tempio-Ampurias

• Metropolitan Archdiocese of Agrigento
  • Diocese of Caltanissetta
  • Diocese of Piazza Armerina

• Metropolitan Archdiocese of Catania
  • Diocese of Acireale
  • Diocese of Caltagirone

• Metropolitan Archdiocese of Messina-Lipari-Santa Lucia del Mela
  • Diocese of Nicosia
  • Diocese of Patti

• Metropolitan Archdiocese of Palermo
  • Archdiocese of Monreale
  • Diocese of Cefalu
  • Diocese of Mazara del Vallo
  • Diocese of Trapani

• Metropolitan Archdiocese of Siracusa
  • Diocese of Noto
  • Diocese of Ragusa

• Metropolitan Archdiocese of Florence
  • Diocese of Arezzo-Cortona-Sansepolcro
  • Diocese of Fiesole
  • Diocese of Pistoia
  • Diocese of Prato
  • Diocese of San Miniato

• Archdiocese of Pisa
  • Diocese of Livorno
  • Diocese of Massa Carrara-Pontremoli
  • Diocese of Pescia
  • Diocese of Volterra

• Metropolitan Archdiocese of Siena-Colle di Val d'Elsa-Montalcino
  • Diocese of Grosseto
  • Diocese of Massa Marittima-Piombino
  • Diocese of Montepulciano-Chiusi-Pienza
  • Diocese of Pitigliano-Sovana-Orbetello

In the ecclesiastical region of Triveneto, there are two ecclesiastical provinces of that are situated in the civil region of Friuli-Venezia Giulia (Gorizia and Udine); one province that is mainly situated in the civil region of Trentino-Alto Adige/Südtirol (Trento); one province that is mainly situated in the civil region of Veneto (Venice).

• Metropolitan Archdiocese of Gorizia
  • Diocese of Trieste

• Metropolitan Archdiocese of Udine

• Metropolitan Archdiocese of Trento
  • Diocese of Bolzano-Brixen

• Patriarchate (& Metropolitan Archdiocese) of Venice
  • Diocese of Adria-Rovigo
  • Diocese of Belluno-Feltre
  • Diocese of Chioggia
  • Diocese of Concordia-Pordenone
  • Diocese of Padua
  • Diocese of Treviso
  • Diocese of Verona
  • Diocese of Vicenza
  • Diocese of Vittorio Veneto

• Metropolitan Archdiocese of Perugia-Città della Pieve
  • Diocese of Assisi-Nocera Umbra-Gualdo Tadino
  • Diocese of Città di Castello
  • Diocese of Foligno
  • Diocese of Gubbio

• Titular Archiepiscopal Sees :
  • Metropolitan : Patriarchate of Aquileia, Patriarchate of Grado
  • other : Archdiocese of Gradisca
• Titular Episcopal Sees (158): Acquapendente, Æca, Agropoli, Alessano, Altino, Amiterno, Anglona, Anzio, Aquaviva, Arna, Arpi, Asolo, Atella, Aveia, Bagnoregio, Belcastro, Bettona, Bevagna, Biccari, Bisarcio, Bitetto, Blanda, Blera, Bolsena, Bomarzo, Brescello, Buxentum, Campli, Canne, Canosa, Caorle, Capo della Foresta, Capri, Carini, Carinola, Carmeiano, Castello, Castro, Castro di Puglia, Castro di Sardegna, Caudium, Celano, Cerenzia, Cerveteri, Città Ducale, Civitanova, Civitate, Claterna, Cuma, Dolia, Dragonara, Eclano, Egnazia Appula, Equilio, Eraclea, Erdonia, Faleri, Falerone, Ferento, Fidene, Fiorentino, Fondi, Forconio, Fordongianus, Forlimpopoli, Formia, Foro Flaminio, Frigento, Gabi, Galazia in Campania, Gallese, Galtellì, Grumentum, Guardialfiera, Isola, Labico, Lavello, Lentini, Lesina, Lettere, Lilibeo, Lorium, Luni, Malamocco, Martana, Martirano, Massa Lubrense, Minervino Murge, Minori, Minturno, Miseno, Montecorvino, Montefiascone, Montemarano, Monterano, Monteverde, Mottola, Nepi, Nomento, Numana, Oderzo, Ofena, Orte, Ostra, Otricoli, Ottana, Passo Corese, Pausula, Pesto, Plestia, Ploaghe, Polignano, Populonia, Potenza Picena, Ravello, Roselle, Sabiona, Sala Consilina, Salpi, San Leone, Santa Giusta, Satriano, Scala, Sepino, Sorres, Spello, Strongoli, Subaugusta, Suelli, Sulci, Sutri, Taormina, Tauriano, Termini Imerese, Tharros, Thurio, Tindari, Torcello, Tortiboli, Tre Taverne, Treba, Trevi, Trevi nel Lazio, Trevico, Tricala, Troina, Tronto, Tuscania, Umbriatico, Urbisaglia, Velia, Vescovìo, Vibo Valentia, Vico Equense, Voghenza, Volturno, Vulturara, Zuglio
• Titular Abbacies (?nullius) (all 10 united to current dioceses) : Farfa, Fontevivo, Nonantola, Pomposa, San Colombano, San Martino al Monte Cimino, San Michele Arcangelo di Montescaglioso, San Salvatore Maggiore, Santa Maria di Polsi, Santissimo Salvatore

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  The seat of the Archdiocese of Agrigento is Cattedrale Metropolitana di San Gerlando.
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  The seat of the Archdiocese of Ancona-Osimo is Basilica Cattedrale Metropolitana di San Ciriaco.
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  The co-seat of the Archdiocese of Ancona-Osimo is Basilica Concattedrale di S. Leopardo.
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  The seat of the Archdiocese of Bari-Bitonto is Cattedrale di San Sabino.
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  The co-seat of the Archdiocese of Bari-Bitonto is Cattedrale di San Valentino.
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  The seat of the Archdiocese of Benevento is Cattedrale di Santa Maria Assunta.
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  The seat of the Archdiocese of Bologna is Cattedrale Metropolitana di San Pietro.
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  The co-seat of the Archdiocese of Campobasso-Boiano is Concattedrale di S. Bartolomeo(Boiano).
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  The seat of the Archdiocese of Cagliari is Cattedrale di Santa Maria e Santa Cecilia.
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  The seat of the Archdiocese of Catanzaro-Squillace is Cattedrale di S. Maria Assunta.
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  The co-seat of the Archdiocese of Catanzaro-Squillace is Concattedrale di S. Maria Assunta(Squillace).
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  The seat of the Archdiocese of Catania is Cattedrale di Sant'Agata.
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  The seat of the Archdiocese of Chieti-Vasto is Cattedrale di S. Giustino.
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  The co-seat of the Archdiocese of Chieti-Vasto is Concattedrale di S. Giuseppe(Vasto).
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  The seat of the Archdiocese of Cosenza-Bisignano is Cattedrale di S. Maria Assunta.
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  The seat of the Archdiocese of Fermo is Basilica Cattedrale di Maria SS. Assunta in Cielo.
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  The seat of the Archdiocese of Florence is Basilica di Santa Maria del Fiore.
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  The seat of the Archdiocese of Foggia-Bovino is Cattedrale di S. Maria Assunta in Cielo.
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  The co-seat of the Archdiocese of Foggia-Bovino is Basilica Concattedrale di S. Maria Assunta(Bovino).
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  The seat of the Archdiocese of Genoa is Cattedrale di San Lorenzo.
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  The seat of the Archdiocese of Gorizia is Cattedrale di Ss. Ilario e Taziano.
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  The seat of the Archdiocese of L'Aquila is Cattedrale di SS. Massimo e Giorgio.
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  The seat of the Archdiocese of Lecce is Cattedrale di Maria SS. Assunta.
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  The seat of the Archdiocese of Lucca is Cattedrale di S. Martino.
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  The seat of the Archdiocese of Messina-Lipari-Santa Lucia del Mela is Basilica Cattedrale di S. Maria SS. Assunta.
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  The co-seat of the Archdiocese of Messina-Lipari-Santa Lucia del Mela is Concattedrale Archimandritato del Santissimo Salvatore(Messina).
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  The co-seat of the Archdiocese of Messina-Lipari-Santa Lucia del Mela is Concattedrale di S. Bartolomeo(Lipari).
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  The co-seat of the Archdiocese of Messina-Lipari-Santa Lucia del Mela is Concattedrale di S. Maria Assunta(San Lucia) .
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  The seat of the Archdiocese of Milan is Cattedrale di S. Maria Nascente.
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  The seat of the Archdiocese of Modena-Nonantola is Basilica Cattedrale di S. Maria Assunta.
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  The co-seat of the Archdiocese of Modena-Nonantola is Basilica Abbaziale di San Silvestro I Papa(Nonantola).
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  The seat of the Archdiocese of Naples is Cattedrale di Santa Maria Assunta.
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  The seat of the Archdiocese of Oristano is Cattedrale di S. Maria Assunta.
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  The seat of the Archdiocese of Palermo is Cattedrale di l’Assunzione di Maria.
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  The seat of the Archdiocese of Perugia-Città della Pieve is Cattedrale di S. Lorenzo.
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  The seat of the Archdiocese of Pesaro is Basilica Cattedrale di S. Maria Assunta.
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  The seat of the Archdiocese of Pescara-Penne is Cattedrale di S. Cetteo Vescovo e Martire.
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  The seat of the Archdiocese of Pisa is Cattedrale di S. Maria Assunta.
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  The seat of the Archdiocese of Potenza-Muro Lucano-Marsico Nuovo is Basilica Cattedrale di S. Maria Assunta e S. Gerardo Vescovo.
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  The seat of the Archdiocese of Ravenna-Cervia is Cattedrale di Risurrezione di N.S. Gesù Cristo.
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  The co-seat of the Archdiocese of Ravenna-Cervia is Cattedrale di S. Pietro(Cervia).
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  The seat of the Archdiocese of Reggio Calabria-Bova is Basilica Cattedrale di Maria SS. Assunta in Cielo.
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  The seat of the Diocese of Rome is Archbasilica of St. John Lateran
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  The seat of the Archdiocese of Sassari is Cattedrale di S. Nicola di Bari.
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  The seat of the Archdiocese of Salerno-Campagna-Acerno is Cattedrale-Basilica di S. Matteo.
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  The co-seat of the Archdiocese of Salerno-Campagna-Acerno is Concattedrale-Basilica di S. Maria della Pace(Campagna).
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  The co-seat of the Archdiocese of Salerno-Campagna-Acerno is Concattedrale di S. Donato(Acerno).
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  The seat of the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino is Cattedrale di S. Maria Assunta.
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  The co-seat of the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino is the Cathedral of Ss. Marziale & Alberto.
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  The co-seat of the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino is Concattedrale di S. Salvatore(Montalcino).
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  The seat of the Archdiocese of Siracusa is the Cathedral of the Nativity of Mary Most Holy.
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  The seat of the Archdiocese of Spoleto-Norcia is Cattedrale di Santa Maria Assunta.
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  The co-seat of the Archdiocese of Spoleto-Norcia is Concattedrale di S. Maria Argentea(Norcia).
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  The seat of the Archdiocese of Taranto is Basilica Cattedrale di S. Cataldo.
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  The seat of the Archdiocese of Turin is Cattedrale Metropolitana di S. Giovanni Battista.
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  The seat of the Archdiocese of Trento is Basilica Cattedrale di S. Vigilio Vescovo.
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  The seat of the Archdiocese of Udine is Cattedrale Metropolitana di S. Maria Annunziata.
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  The seat of the Archdiocese of Venice is Basilica Cattedrale Patriachale di S. Marco.
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  The seat of the Archdiocese of Vercelli is Cattedrale-Basilica di S. Eusebio.

• List of Catholic dioceses (structured view)
• List of cathedrals in Italy

• GCatholic - Italy
• GCatholic - Former and/or titular sees in Italy
• Catholic Hierarchy Profile of the Catholic Church in Italy