Catholic DiocesesinFederal Republic of Nigeria (Nigeria) | ![]() |
| Former Jurisdiction | Type | Became |
| Abuja Abugen(sis) | Diocese | Now Metropolitan Archdiocese of Abuja |
| Abuja Abugen(sis) | Independent Mission | Now Metropolitan Archdiocese of Abuja |
| Ado-Ekiti Adœkitien(sis)–Ekitien(sis) | Diocese | Now Diocese of Ekiti |
| Asaba-Benin | Apostolic Vicariate | Now Metropolitan Archdiocese of Benin City |
| Bauchi Bauchian(us) | Apostolic Vicariate | Now Diocese of Bauchi |
| Benin City Urbis Beninen(sis) | Diocese | Now Metropolitan Archdiocese of Benin City |
| Benue | Apostolic Prefecture | Now Diocese of Makurdi |
| Bight of Benin / Costa di Benin Oræ Benini | Apostolic Vicariate | Now Metropolitan Archdiocese of Lagos |
| Bomadi Bomadien(sis) | Apostolic Vicariate | Now Diocese of Bomadi |
| Bomadi Bomadien(sis) | Independent Mission | Now Diocese of Bomadi |
| Calabar Calabaren(sis) | Diocese | Now Metropolitan Archdiocese of Calabar |
| Calabar Calabaren(sis) | Apostolic Vicariate | Now Metropolitan Archdiocese of Calabar |
| Calabar Calabaren(sis) | Apostolic Prefecture | Now Metropolitan Archdiocese of Calabar |
| Dahomey | Apostolic Vicariate | Now Metropolitan Archdiocese of Lagos |
| Eastern Nigeria / Nigeria Orientale | Apostolic Prefecture | Now Metropolitan Archdiocese of Kaduna |
| Ibadan Ibadanen(sis) | Diocese | Now Metropolitan Archdiocese of Ibadan |
| Ibadan Ibadanen(sis) | Apostolic Prefecture | Now Metropolitan Archdiocese of Ibadan |
| Idah Idahin(us) | Apostolic Prefecture | Now Diocese of Idah |
| Ilorin Ilorinen(sis) | Apostolic Prefecture | Now Diocese of Ilorin |
| Jos Iosen(sis) | Diocese | Now Metropolitan Archdiocese of Jos |
| Jos de Jos | Apostolic Prefecture | Now Metropolitan Archdiocese of Jos |
| Kabba Kabbæn(sis) | Diocese | Now Diocese of Lokoja |
| Kabba Kabbæn(sis) | Apostolic Prefecture | Now Diocese of Lokoja |
| Kaduna Kadunaën(sis) | Diocese | Now Metropolitan Archdiocese of Kaduna |
| Kaduna de Kaduna | Apostolic Prefecture | Now Metropolitan Archdiocese of Kaduna |
| Kano Kanen(sis) | Apostolic Vicariate | Now Diocese of Kano |
| Kano Kanen(sis) | Independent Mission | Now Diocese of Kano |
| Kontagora Kongtagoran(us) | Apostolic Vicariate | Now Diocese of Kontagora |
| Kontagora Kongtagoran(us) | Apostolic Prefecture | Now Diocese of Kontagora |
| Lagos Lagosen(sis) | Apostolic Vicariate | Now Metropolitan Archdiocese of Lagos |
| Lower Niger / Niger Inferiore | Apostolic Prefecture | Now Metropolitan Archdiocese of Onitsha |
| Maiduguri Maidugurien(sis) | Apostolic Prefecture | Now Diocese of Maiduguri |
| Minna Minnaën(sis) | Apostolic Prefecture | Now Diocese of Minna |
| Northern Nigeria | Apostolic Vicariate | Now Metropolitan Archdiocese of Benin City |
| Northern Nigeria / Nigeria Settentrionale | Apostolic Prefecture | Now Metropolitan Archdiocese of Kaduna |
| Ogoja de Ogoja | Apostolic Prefecture | Now Diocese of Ogoja |
| Ondo-Ilorin | Apostolic Vicariate | Now Diocese of Ondo |
| Onitsha Onitshan(us) | Apostolic Vicariate | Now Metropolitan Archdiocese of Onitsha |
| Onitsha–Owerri | Apostolic Vicariate | Now Metropolitan Archdiocese of Onitsha |
| Oturkpo Oturkpœn(sis) | Diocese | Now Diocese of Makurdi |
| Oturkpo Oturkpœn(sis) | Apostolic Prefecture | Now Diocese of Makurdi |
| Owerri Overrien(sis) | Diocese | Now Metropolitan Archdiocese of Owerri |
| Owerri Overrien(sis) | Apostolic Vicariate | Now Metropolitan Archdiocese of Owerri |
| Oyo Oyoën(sis) | Apostolic Prefecture | Now Diocese of Oyo |
| Sokoto Sokotoën(sis) | Apostolic Prefecture | Now Diocese of Sokoto |
| Southern Nigeria / Nigeria Meridionale Nigeriæ Meridionalis | Apostolic Vicariate | Now Metropolitan Archdiocese of Onitsha |
| Upper Niger / Niger Superiore | Apostolic Prefecture | Now Metropolitan Archdiocese of Benin City |
| Western and Central Africa / Africa Occidentale e Centrale (Maronite Rite) Africa Occidentali et Centrali | Apostolic Exarchate | Now Diocese of Annunciation of Ibadan |
| Western Nigeria / Nigeria Occidentale | Apostolic Vicariate | Now Metropolitan Archdiocese of Benin City |
| Western Nigeria / Nigeria Occidentale | Apostolic Prefecture | Now Metropolitan Archdiocese of Benin City |
| Yola Yolaën(sis) | Apostolic Prefecture | Now Diocese of Yola |
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