Catholic DiocesesinRepublic of Türkiye (Turkiye) | ![]() |
| Former Jurisdiction | Type | Became |
| Achyraus / Achirao Achyraëb(sis) | Diocese | Now Titular Episcopal See of Achyraus and Titular Episcopal See of Achyraus |
| Adana / Adana (Armenian Rite) Adanen(sis) Armenorum | Diocese | Now Titular Episcopal See of Adana and Titular Episcopal See of Adana |
| Ægeæ / Egee Ægeæn(sis) | Diocese | Now Titular Episcopal See of Ægeæ and Titular Episcopal See of Ægeæ |
| Amasea / Amasea Amasen(us) / Amasien(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Amasea and Titular Metropolitan See of Amasea |
| Amida / Amida Amiden(us) Latinorem | Metr. Archdiocese | Suppressed and Titular Metropolitan See of Amida |
| Amida / Amida / Diarbekir (Armenian Rite) Amiden(us) Armenorum | Diocese | Now Titular Episcopal See of Amida and Titular Episcopal See of Amida |
| Amida (Syriac Rite) Amiden(us) Syrorum | Diocese | Now Titular Episcopal See of Mardin and Titular Metropolitan See of Amida |
| Ancyra / Ancira Ancyran(us) | Metr. Archdiocese | Now Titular Metropolitan See of Ancyra and Titular Metropolitan See of Ancyra |
| Ancyra / Ancira / Ancira / Angora / Ankara (Armenian Rite) Ancyran(us) Armenorum | Diocese | Now Titular Episcopal See of Ancyra and Titular Episcopal See of Ancyra |
| Antioch / Antiochia Antiochen(us) Latinorum | Patriarchate | Suppressed |
| Antioch / Antiochia Antiochen(us) Latinorum | Diocese | Suppressed |
| Antiochia / Antiochia di Pisidia | Metr. Archdiocese | Now Titular Metropolitan See of Antiochia in Pisidia and Titular Metropolitan See of Antiochia in Pisidia |
| Apollonias / Apolloniade Apollonien(sis) | Diocese | Now Titular Episcopal See of Apollonias and Titular Episcopal See of Apollonias |
| Aristium / Aristio Aristian(us) | Diocese | Now Titular Episcopal See of Aristium and Titular Episcopal See of Aristium |
| Artvin / Artwin (Armenian Rite) Artuinen(sis) Armenorum | Diocese | Now Titular Episcopal See of Artvin and Titular Episcopal See of Artvin |
| Batnæ / Batne Bathnen(sis) | Diocese | Now Titular Episcopal See of Batnæ and Titular Episcopal See of Batnæ |
| Byzantium | Diocese | Suppressed |
| Cesarea in Cappadocia | Metr. Archdiocese | Now Titular Metropolitan See of Cesarea in Cappadocia and Titular Metropolitan See of Cesarea in Cappadocia |
| Cesarea in Cappadocia / Cesarea di Cappadocia / Kayseri (Armenian Rite) Cæsarien(sis) in Cappadocia Armenorum | Diocese | Now Titular Episcopal See of Cesarea in Cappadocia and Titular Episcopal See of Cesarea in Cappadocia |
| Charræ / Carre | Diocese | Now Titular Episcopal See of Carrhæ and Titular Episcopal See of Carrhæ |
| Cilicia (Armenian Rite) Ciliciæ Armenorum | Diocese | Now Patriarchal See of Cilicia |
| Colonia / Colonia | Archdiocese | Now Titular Archiepiscopal See of Colonia in Armenia and Titular Archiepiscopal See of Colonia in Armenia |
| Colossæ / Colosse / Colossi | Archdiocese | Now Titular Archiepiscopal See of Colossæ and Titular Archiepiscopal See of Colossæ |
| Colossæ / Colosse / Colossi | Diocese | Now Titular Archiepiscopal See of Colossæ and Titular Archiepiscopal See of Colossæ |
| Comanæ / Comana / Armisiacha | Diocese | Now Titular Episcopal See of Comana Armeniæ and Titular Episcopal See of Comana Armeniæ |
| Comana Ponti / Comana Pontica | Diocese | Now Titular Episcopal See of Comana pontica and Titular Episcopal See of Comana pontica |
| Constantinople / Constantinopoli Constantinopolitan(us) Latinorum | Patriarchate | Suppressed |
| Constantinople | Patriarchate | Suppressed |
| Constantinople / Constantinopoli Constantinopolitan(us) Latinorum | Patriarchal See | Suppressed |
| Constantinople | Metr. Archdiocese | Suppressed |
| Constantinople (Bulgarian Rite) | Apostolic Vicariate | Suppressed into |
| Constantinopole / Constantinopoli Constantinopolitan(us) | Apostolic Vicariate | Now Apostolic Vicariate of Istanbul |
| Constantinopole / Constantinopoli Constantinopolitan(us) | Apostolic Vicariate | Now Apostolic Vicariate of Istanbul |
| Cyzicus / Cizico Cyzicen(us) | Metr. Archdiocese | Now Titular Metropolitan See of Cyzicus and Titular Metropolitan See of Cyzicus |
| Diarbekir / Amida / Diyarbakır (Chaldean Rite) Amiden(sis) Chaldæorum | Diocese | Now Archdiocese of Diarbekir |
| Edessa / Edessa | Archdiocese | Now Titular Metropolitan See of Edessa in Osrhoëne and Titular Metropolitan See of Edessa in Osrhoëne |
| Ephesus / Efeso Ephesin(us) | Metr. Archdiocese | Now Titular Metropolitan See of Ephesus and Titular Metropolitan See of Ephesus |
| Eumenia / Eumenia Eumenen(sis) | Diocese | Now Titular Episcopal See of Eumenia and Titular Episcopal See of Eumenia |
| Focea Fochiarum Novarum | Diocese | Now Titular Episcopal See of Phocæa and Titular Episcopal See of Phocæa |
| Gangra / Gangra Gangren(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Gangra and Titular Metropolitan See of Gangra |
| Garin / Erzerum / Erzurum (Armenian Rite) Erzerumien(sis) Armenorum | Diocese | Now Titular Episcopal See of Garin and Titular Episcopal See of Garin |
| Gazireh / Gezira (Syriac Rite) Jaziren(sis) Syrorum | Diocese | Suppressed |
| Gazireh / Gezira (Chaldean Rite) Jaziren(sis) Chaldæorum | Diocese | Suppressed into Diocese of Aleppo, Archdiocese of Diarbekir |
| Gazireh / Gezira Jaziren(sis) Latinorum | Independent Mission | Suppressed |
| Heraclea / Eraclea | Archdiocese | Now Titular Metropolitan See of Heraclea in Europa and Titular Metropolitan See of Heraclea in Europa |
| Hierapolis / Gerapoli | Metr. Archdiocese | Now Titular Metropolitan See of Hierapolis in Phrygia and Titular Metropolitan See of Hierapolis in Phrygia |
| Hierapolis / Gerapoli | Diocese | Now Titular Metropolitan See of Hierapolis in Phrygia and Titular Metropolitan See of Hierapolis in Phrygia |
| Iconium / Iconio Iconien(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Iconium and Titular Metropolitan See of Iconium |
| Iconium / Iconio Iconien(sis) | Diocese | Now Titular Metropolitan See of Iconium and Titular Metropolitan See of Iconium |
| Istanbul / Constantinopole / Constantinopoli (Armenian Rite) Constantinopolitan(us) Armenorum | Apostolic Vicariate | Now Patriarchal See of Cilicia |
| Kharput / Karput (Armenian Rite) Karputen(sis) | Diocese | Now Titular Episcopal See of Kharput and Titular Episcopal See of Kharput |
| Lampsacus / Lampsaco Lampsacen(us) | Diocese | Now Titular Episcopal See of Lampsacus and Titular Episcopal See of Lampsacus |
| Laodicea / Laodicea di Frigia | Metr. Archdiocese | Now Titular Metropolitan See of Laodicea in Phrygia and Titular Metropolitan See of Laodicea in Phrygia |
| Laodicea / Laodicea di Frigia | Diocese | Now Titular Metropolitan See of Laodicea in Phrygia and Titular Metropolitan See of Laodicea in Phrygia |
| Magyddus / Magido | Diocese | Now Titular Episcopal See of Magydus and Titular Episcopal See of Magydus |
| Marasc (Armenian Rite) Germanicen(sis) / Marascen(sis) | Diocese | Now Titular Episcopal See of Marasc and Titular Episcopal See of Marasc |
| Mardin (Armenian Rite) Mardinen(sis) Armenorum | Archdiocese | Now Titular Archiepiscopal See of Mardin and Titular Archiepiscopal See of Mardin |
| Mardin (Chaldean Rite) Mardinen(sis) Chaldæorum | Diocese | Now Titular Episcopal See of Mardin and Titular Episcopal See of Mardin |
| Mardin (Syriac Rite) | Diocese | Now Titular Episcopal See of Mardin and Titular Episcopal See of Mardin |
| Mardin / Mesopotamia Mardinen(sis) | Apostolic Prefecture | Suppressed |
| Mardin and Amida (Syriac Rite) Marden(sis) et Amiden(sis) Syrorum | Diocese | Now Titular Episcopal See of Mardin and Titular Episcopal See of Mardin |
| Martiropolis | Metr. Archdiocese | Now Titular Archiepiscopal See of Martyropolis and Titular Archiepiscopal See of Martyropolis |
| Martiropolis | Archdiocese | Now Titular Archiepiscopal See of Martyropolis and Titular Archiepiscopal See of Martyropolis |
| Melitene / Melitene Meliten(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Melitene and Titular Metropolitan See of Melitene |
| Melitene / Melitene / Malatia (Armenian Rite) Meliten(sis) Armenorum | Diocese | Now Titular Episcopal See of Melitene and Titular Episcopal See of Melitene |
| Mopsuestia / Mopsuestia Mopsuesten(us) | Diocese | Now Titular Archiepiscopal See of Mopsuestia and Titular Archiepiscopal See of Mopsuestia |
| Mush / Musc (Armenian Rite) Muscen(sis) | Diocese | Now Titular Episcopal See of Mush and Titular Episcopal See of Mush |
| Myra / Mira Myren(sis)Myren(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Myra and Titular Metropolitan See of Myra |
| Myra / Mira Myren(sis)Myren(sis) | Diocese | Now Titular Metropolitan See of Myra and Titular Metropolitan See of Myra |
| Nazianzus / Nazianzo Nazianzen(us) | Archdiocese | Now Titular Episcopal See of Nazianzus and Titular Episcopal See of Nazianzus |
| Neocæsarea / Neocesarea | Metr. Archdiocese | Now Titular Metropolitan See of Neocæsarea in Ponto and Titular Metropolitan See of Neocæsarea in Ponto |
| Nicæa / Nicea Nicæn(us) | Metr. Archdiocese | Now Titular Metropolitan See of Nicæa and Titular Metropolitan See of Nicæa |
| Nicomedia / Nicomedia Nicomedien(sis) | Metr. Archdiocese | Now Titular Metropolitan See of Nicomedia and Titular Metropolitan See of Nicomedia |
| Nicomedia / Nicomedia Nicomedien(sis) | Diocese | Now Titular Metropolitan See of Nicomedia and Titular Metropolitan See of Nicomedia |
| Nisibis / Nisibi Nisiben(us) | Archdiocese | Now Titular Archiepiscopal See of Nisibis and Titular Archiepiscopal See of Nisibis |
| Nyssa / Nissa Nyssen(us) | Diocese | Now Titular Episcopal See of Nyssa and Titular Episcopal See of Nyssa |
| Olimpus / Olimpo | Diocese | Now Titular Episcopal See of Olympus and Titular Episcopal See of Olympus |
| Parium / Pario Parian(us) | Archdiocese | Now Titular Archiepiscopal See of Parium and Titular Archiepiscopal See of Parium |
| Pergamus / Pergamo | Diocese | Now Titular Episcopal See of Pergamum and Titular Episcopal See of Pergamum |
| Polybotus / Poliboto Polyboten(sis) | Diocese | Now Titular Episcopal See of Polybotus and Titular Episcopal See of Polybotus |
| Prusa (Armenian Rite) Brusen(sis) Armenorum / Prusen(sis) Armenorum | Diocese | Now Titular Episcopal See of Prusa and Titular Episcopal See of Prusa |
| Prusa / Prusa Prusen(sis) | Diocese | Now Titular Episcopal See of Prusa and Titular Episcopal See of Prusa |
| Samosata / Samosata Samosaten(sis) | Diocese | Now Titular Archiepiscopal See of Samosata and Titular Archiepiscopal See of Samosata |
| Sardes / Sardi Sardian(us) | Metr. Archdiocese | Now Titular Metropolitan See of Sardes and Titular Metropolitan See of Sardes |
| Sasima / Sasima Sasimen(sis) | Diocese | Now Titular Episcopal See of Sasima and Titular Episcopal See of Sasima |
| Sebaste / Sivas / Siwas (Armenian Rite) Sebasten(sis) Armenorum | Archdiocese | Now Titular Archiepiscopal See of Sebaste and Titular Archiepiscopal See of Sebaste |
| Sebaste / Sivas / Siwas (Armenian Rite) Sebasten(sis) Armenorum | Diocese | Now Titular Archiepiscopal See of Sebaste and Titular Archiepiscopal See of Sebaste |
| Sebastia / Sebaste | Metr. Archdiocese | Now Titular Metropolitan See of Sebastea and Titular Metropolitan See of Sebastea |
| Sebastopolis / Sebastopoli | Diocese | Now Titular Episcopal See of Sebastopolis in Armenia and Titular Episcopal See of Sebastopolis in Armenia |
| Sebastopolis in Thracia / Sebastopoli di Tracia Sebastopolitan(us) in Thracia | Diocese | Now Titular Episcopal See of Sebastopolis in Thracia and Titular Episcopal See of Sebastopolis in Thracia |
| Seert / Arzon (Chaldean Rite) Serten(sis) Chaldæorum | Diocese | Now Archdiocese of Diarbekir and Titular Episcopal See of Seert |
| Sinope / Sinope Sinopen(us) | Diocese | Now Titular Episcopal See of Sinope and Titular Episcopal See of Sinope |
| Smirne / Smyrna | Archdiocese | Now Metropolitan Archdiocese of Izmir |
| Synnadæ / Sinnada | Metr. Archdiocese | Now Titular Metropolitan See of Synnada in Phrygia and Titular Metropolitan See of Synnada in Phrygia |
| Thyatira / Tiatira Thyatiren(us) | Diocese | Now Titular Episcopal See of Thyatira and Titular Episcopal See of Thyatira |
| Tokat (Armenian Rite) Tokaten(sis) Armenorum | Diocese | Now Titular Archiepiscopal See of Sebaste and Titular Episcopal See of Tokat |
| Trabzon / Trebisonda Trapezuntina | Apostolic Prefecture | Now Metropolitan Archdiocese of Izmir |
| Tracia / Hadrianopolis (Bulgarian Rite) Thraciæ Bulgarorum | Apostolic Vicariate | Suppressed into |
| Trapezus / Trabzon / Trebisonda / Trapezunt (Armenian Rite) Trapezuntin(us) Armenorum | Diocese | Now Titular Episcopal See of Trapezus and Titular Episcopal See of Trapezus |
| Troas / Troade Troaden(sis) / Trojan(sis) | Diocese | Now Titular Episcopal See of Troas and Titular Episcopal See of Troas |
| Turkey of Europe / Turchia d’Europa (Greek Rite) | Apostolic Exarchate | Now Apostolic Exarchate of Istanbul |
| Upper Gazireh (Chaldean Rite) | Apostolic Administration | Suppressed into Diocese of Aleppo, Archdiocese of Diarbekir |
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