 | 1982 | 1983 | 1984 |  |
Date | Country | Change |
| 1983 |  Lebanon | Titular Episcopal See of Sarepta (Maronite Rite) was established |
| 1983.01.21 |  Italy | Metropolitan Archdiocese of Benevento exchanged territory with Metropolitan Archdiocese of Campobasso–Boiano |
| 1983.01.21 | Italy | Metropolitan Archdiocese of Campobasso–Boiano exchanged territory with Metropolitan Archdiocese of Benevento |
| 1983.01.21 | Italy | Diocese of Lucera lost territory to Metropolitan Archdiocese of Benevento |
| 1983.01.24 |  Philippines | Diocese of Ozamiz was promoted as Metropolitan Archdiocese of Ozamiz (with suffragan sees Dipolog, Iligan, Pagadian and Marawi) |
| 1983.01.27 | Philippines | Apostolic Vicariate of San Jose in Mindoro was established (from Apostolic Vicariate of Calapan) |
| 1983.02.10 |  Mexico | Diocese of Acapulco was promoted as Metropolitan Archdiocese of Acapulco (with suffragan sees Chilapa and Ciudad Altamirano) |
| 1983.02.19 |  Brazil | Territorial Prelature of Vila Rondônia was promoted as Diocese of Ji-Paraná |
| 1983.02.24 | Philippines | Diocese of Antipolo was established (from Metropolitan Archdiocese of Manila and became suffragan of Manila) |
| 1983.03.17 |  Cameroon | Diocese of Bertoua was established (from Diocese of Doumé and became suffragan of Yaoundé) |
| 1983.03.17 | Cameroon | Diocese of Doumé was renamed as Diocese of Doumé–Abong’ Mbang (lost territory to establish Diocese of Bertoua) |
| 1983.03.17 |  Kenya | Diocese of Murang’a was established (from Diocese of Nyeri and became suffragan of Nairobi) |
| 1983.03.21 | Italy | Territorial Abbacy of San Paolo fuori le Mura lost territory to Diocese of Nepi |
| 1983.03.25 |  USA | Diocese of Lubbock was established (from Diocese of Amarillo and Diocese of San Angelo and became suffragan of San Antonio) |
| 1983.03.30 |  Ecuador | Military Vicariate of Ecuador was established |
| 1983.04.06 |  Peru | Territorial Prelature of Chimbote was promoted as Diocese of Chimbote (gained territory from Diocese of Huaraz) |
| 1983.04.06 | Peru | Diocese of Huaraz lost territory to Diocese of Chimbote |
| 1983.04.07 | Italy | Diocese of Ripatransone was renamed as Diocese of Ripatransone–San Benedetto del Tronto |
| 1983.04.11 | Brazil | Diocese of Assis lost territory to Diocese of Presidente Prudente |
| 1983.04.18 | Brazil | Diocese of Caravelas was renamed as Diocese of Teixeira de Freitas–Caravelas |
| 1983.05.02 |  South Sudan | Diocese of Torit was established (from Metropolitan Archdiocese of Juba and became suffragan of Juba) |
| 1983.05.25 | Italy | Diocese of Lacedonia lost territory to Diocese of Ascoli Satriano |
| 1983.06.06 |  Congo-Brazzaville | Diocese of Ouesso was established (from Diocese of Owando and became suffragan of Brazzaville) |
| 1983.07.28 |  Bolivia | Territorial Prelature of Coroico was promoted as Diocese of Coroico |
| 1983.10.07 |  Nepal | Mission sui juris of Nepal was established (from Diocese of Patna) |
| 1983.10.13 | Brazil | Territorial Prelature of Cândido Mendes was promoted as Diocese of Cândido Mendes |
| 1983.11.10 | USA | Diocese of Colorado Springs was established (from Metropolitan Archdiocese of Denver and Diocese of Pueblo and became suffragan of Denver) |
| 1983.11.11 |  Tanzania | Diocese of Kahama was established (from Metropolitan Archdiocese of Tabora and became suffragan of Tabora) |
| 1983.11.16 |  Colombia | Territorial Prelature of Bertrania en el Catatumbo was renamed as Territorial Prelature of Tibú |
| 1983.11.22 |  South Korea | Military Vicariate of South Korea was established |
| 1983.12.05 | Congo-Brazzaville | Diocese of Nkayi was established (from Diocese of Pointe-Noire and became suffragan of Brazzaville) |
| 1983.12.05 |  India | Diocese of Diphu was established (from Metropolitan Archdiocese of Shillong–Gauhati and Diocese of Silchar and became suffragan of Shillong–Gauhati) |
| 1983.12.05 | USA | Diocese of Saint Josaphat in Parma (Ukrainian Rite) was established (from Metropolitan Archdiocese of Philadelphia and became suffragan of Philadelphia) |
| 1983.12.31 |  Belize | Diocese of Belize was renamed as Diocese of Belize City–Belmopan |
© 2026 GCatholic.org
|
