List of Catholic titular sees
This is the official list of titular sees of the Catholic Church included in the Annuario Pontificio. Archiepiscopal sees are shown in bold.
The Italian-language Annuario Pontificio devotes some 200 pages to listing these sees, with up to a dozen names on each page. It gives their names in Latin as well as in Italian, and indicates the ancient Roman province to which most of them belonged or other geographical particulars, their status as metropolitan see or suffragan see, and basic biographical information about their current bishops.
A
- Abaradira
- Abari
- Abbir Germaniciana
- Abbir Maius
- Abercornia
- Abernethia
- Abidda
- Abila in Palaestina
- Abila Lysaniae
- Abitinae
- Abora
- Abrittum
- Absa Salla
- Absorus
- Abthugni
- Abula
- Abydus
- Abziri
- Acalissus
- Acarassus
- Acci
- Accia
- Acelum
- Achelous
- Acholla
- Achrida
- Achyraus
- Acilisene
- Acmonia
- Acrassus
- Acropolis
- Acufida
- Adada
- Adana
- Adana
- Adraa
- Adramyttium
- Adrasus
- Adulis
- Aeclanum
- Aegae
- Aegeae
- Aegina
- Aela
- Aeliae
- Aemona
- Aenus
- Aëtus
- Aezani
- Africa
- Afufenia
- Agathonice
- Agathopolis
- Agbia
- Aggar
- Aggersel
- Agnus
- Agrippias
- Aguntum
- Aggersel
- Alabanda
- Ala Miliaria
- Alava
- Alba
- Alba Maritima
- Albulae
- Aleria
- Alexandria Minor
- Alexanum
- Algiza
- Alia
- Aliezira
- Alinda
- Allegheny
- Alphocranon
- Altava
- Altiburus
- Altinum
- Alton
- Amadassa
- Amaia
- Amantia
- Amasea
- Amastris
- Amathus in Cypro
- Amathus in Palaestina
- Amaura
- Ambia
- Amblada
- Amida
- Amisus
- Amiternum
- Ammaedara
- Ammoniace
- Amorium
- Amphipolis
- Ampora
- Amudarsa
- Amyzon
- Anaea
- Anasartha
- Anastasiopolis
- Anatetarte
- Anazarbus
- Anbar
- Anchialus
- Ancusa
- Ancyra
- Ancyra Ferrea
- Andeda
- Andrapa
- Andropolis
- Anemurium
- Anglona, Pandosia
- Anineta
- Antaeopolis
- Antandrus
- Antarados
- Anthedon
- Antigonea
- Antiphellus
- Antiphrae
- Antinoë
- Antiochia ad Maeandrum
- Antiochia in Pisidia
- Antiochia Parva
- Antipatris
- Antipyrgos
- Antium
- Apamea Cibotus
- Apamea in Bithynia
- Apamea in Syria
- Aperlae
- Aphnaeum
- Aphroditopolis
- Apisa Maius
- Apollonia
- Apollonia Salbace
- Apollonias
- Apollonis
- Apollonopolis Magna
- Apollonopolis Parva
- Apollonos-Hieron
- Appia
- Appiaria
- Aprus
- Apta
- Aptuca
- Aquae Albae in Byzacena
- Aquae Albae in Mauretania
- Aquae in Byzacena
- Aquae in Dacia
- Aquae in Mauretania
- Aquae in Numidia
- Aquae in Proconsulari
- Aquae Flaviae
- Aquae Novae in Numidia
- Aquae Novae in Proconsulari
- Aquae Regiae
- Aquae Sirenses
- Aquae Thibilitanae
- Aquaviva
- Aquileia Patriarchate
- Aquipendium
- Arabia
- Arabissus
- Arad
- Aradi
- Aradus
- Arae in Mauretania
- Arae in Numidia
- Arausio
- Araxa
- Arba
- Arbanum
- Arcadia
- Arcadiopolis in Asia
- Arcadiopolis in Europa
- Arca in Armenia
- Arca in Phoenicia
- Arcavica
- Archelaïs
- Ardamerium
- Árd Carna
- Árd Mór
- Árd Sratha
- Arena
- Areopolis
- Arethusa
- Argos
- Ariarathia
- Ariassus
- Arindela
- Arisitum
- Aristium
- Armentia
- Arna
- Arneae
- Arpi
- Arsacal
- Arsamosata
- Arsennaria
- Arsinoë in Arcadia
- Arsinoë in Cypro
- Artvin
- Arycanda
- Ascalon
- Aspendus
- Aspona
- Assava
- Assuras
- Assus
- Astigi
- Astypalaea
- Asuoremixta
- Atella
- Atenia
- Athribis
- Ath Truim
- Athyra
- Attaea
- Attalea in Lydia
- Attalea in Pamphylia
- Attanasus
- Attuda
- Auca
- Aufinium
- Augurus
- Augusta
- Augustopolis in Palaestina
- Augustopolis in Phrygia
- Aulon
- Aulon
- Aureliopolis in Asia
- Aureliopolis in Lydia
- Aurocla
- Aurusuliana
- Ausafa
- Ausana
- Ausuaga
- Ausuccura
- Autenti
- Auzegera
- Auzia
- Aveia
- Africa Avensa
- Avioccala
- Avissa
- Avitta Bibba
- Axomis
- Azotus
- Azura
B
- Bahanna
- Babylon
- Babra
- Bacanaria
- Bacatha in Arabia
- Bacatha in Palaestina
- Badiae
- Bagai
- Bagis
- Balneoregium
- Baia
- Balanea
- Balbura
- Balecium
- Baliana
- Bamaccora
- Bapara
- Bararus
- Barata
- Barbalissus
- Barca
- Barcusus
- Bardstown
- Bareta
- Bargala
- Bargylia
- Barica
- Baris in Hellesponto
- Baris in Pisidia
- Basilinopolis
- Bassiana
- Basti
- Batnae
- Bavagaliana
- Beatia
- Bela
- Belabitene
- Belali
- Bellicastrum
- Belesasa
- Bencenna
- Benda
- Benepota
- Beneventum
- Bennefa
- Beroea
- Berenice
- Berissa
- Beroë
- Berrhoea
- Betagbara
- Bethleem
- Bettonium
- Bethzabda
- Beverlacum
- Biccari
- Bida
- Bigastro
- Bilta
- Binda
- Birtha
- Bisarchio
- Bisica
- Bistue
- Bisuldino
- Bitettum
- Bitylius
- Bizya
- Bladia
- Blanda Iulia
- Blaundus
- Blera
- Bonitza
- Bononia
- Bonusta
- Boreum
- Bosana
- Bosporus
- Bostra
- Botrys
- Botriana
- Brixellum
- Bria
- Briancio
- Britonia
- Briula
- Bruzus
- Brysis
- Bubastis
- Bubon
- Bucellus
- Budua
- Buffada
- Buleliana
- Bulgarophygum
- Bulla
- Bulla Regia
- Bulna
- Burca
- Bure
- Buruni
- Busiris
- Buslacena
- Butus
- Buthrotum
- Buxentum
- Byblus
C
- Cabarsussi
- Cabasa
- Cabellicum
- Cadi
- Caeciri
- Caelanum
- Caere
- Caesarea in Bithynia
- Caesarea in Cappadocia
- Caesarea Philippi
- Caesarea in Mauretania
- Caesarea in Numidia
- Caesarea in Palaestina
- Caesarea in Thessalia
- Caesariana
- Caesaropolis
- Caffa
- Calama
- Caldas de Reyes
- Caliabria
- California
- Callinicum
- Callipolis
- Caloe
- Caltadria
- Calydon
- Calynda
- Camachus
- Campania
- Camplum
- Camuliana
- Canapium
- Canatha
- Candyba
- Cannae
- Canosa
- Cantanus
- Capitolias
- Capra
- Capreae
- Caprulae
- Capsa
- Capsus
- Caput Cilla
- Carac-Moba
- Carallia
- Cardabunta
- Cardicium
- Cariana
- Carini
- Carinola
- Carmeiano
- Carpasia
- Carpathus
- Carpentrassum
- Carrhae
- Carthage
- Cartennae
- Carystus
- Casae Calanae
- Casae in Numidia
- Casae in Pamphylia
- Casae Medianae
- Casae Nigrae
- Casius
- Cassandria
- Castabala
- Castello
- Castellum Iabar
- Castellum in Mauretania
- Castellum in Numidia
- Castellum Medianum
- Castellum Minus
- Castellum Ripae
- Castellum Tatroportus
- Castellum Tingitii
- Castellum Titulianum
- Castoria
- Castra Galbae
- Castra Martis
- Castra Nova
- Castra Severiana
- Castro di Puglia
- Castro di Sardegna
- Castrum
- Castulo
- Catabum Castra
- Cataquas
- Catrum
- Catula
- Caudium
- Caunus
- Cea
- Ceanannus Mór
- Cebarades
- Cedamusa
- Cediae
- Cefa
- Cefala
- Celerina
- Cellae in Mauretania
- Cellae in Proconsulari
- Cell Ausaille
- Cemerianus
- Cenae
- Cenculiana
- Centenaria
- Centuria
- Centuriones
- Ceramus
- Ceramussa
- Cerasa
- Cerasus
- Cerbali
- Cercina
- Ceretapa
- Cerynia
- Cernitza
- Cestrus
- Chaialum
- Chalcedonia
- Chalcis in Europa
- Chalcis in Graecia
- Chalcis in Syria
- Chariopolis
- Chelm
- Chersonesus in Creta
- Chersonesus in Europa
- Chersonesus in Zechia
- Chiemium
- Chimaera
- Choma
- Chonochora
- Chullu
- Chunavia
- Christianopolis
- Christopolis
- Chrysopolis in Arabia
- Chrysopolis in Macedonia
- Chusra
- Chytri
- Cibalae
- Cibaliana
- Cibyra
- Cidramus
- Cidyessus
- Cilibia
- Cillium
- Cincari
- Cinna
- Cinnaborium
- Cynopolis in Aegypto
- Cynopolis in Arcadia
- Circesium
- Cisamus
- Ciscissus
- Cissa
- Cissi
- Cissita
- Citharizum
- Citium
- Citrus
- Città Ducale
- Cius
- Civitate
- Claneus
- Claternae
- Claudiopolis in Honoriade
- Claudiopolis in Isauria
- Clazomenae
- Cleopatris
- Cluain Iraird
- Cluentum
- Clypia
- Clysma
- Cnidus
- Cnossus
- Codaca
- Codrula
- Coela
- Coeliana
- Colbasa
- Colophon
- Colonia in Armenia
- Colonia in Cappadocia
- Colossae
- Columnata
- Colybrassus
- Comama
- Comana Armeniae
- Comana Pontica
- Comba
- Conana
- Concordia in America
- Cone
- Constantia in Arabia
- Constantia in Thracia
- Constantina
- Coprithis
- Coptus
- Coracesium
- Corada
- Corbavia
- Corinthus
- Corna
- Corniculana
- Corone
- Coronea
- Coropissus
- Corycus
- Corydala
- Cos
- Cotenna
- Cotrada
- Cotyaeum
- Cova
- Cratia
- Cremna
- Crepedula
- Cresima
- Croae
- Cubda
- Cufruta
- Cucusus
- Cuicul
- Culusi
- Cuncacestre
- Cunga Féichin
- Cumae
- Curium
- Cursola
- Curubis
- Cures Sabinorum
- Cusae
- Cyanae
- Cybistra
- Cyme
- Cyparissia
- Cypsela
- Cyrene
- Cyrrhus
- '''Cyzicus'''