 | 1882 | 1883 | 1884 |  |
Date | Country | Change |
| 1883 |  India | Apostolic Vicariate of Western Bengal lost territory to Apostolic Vicariate of Tibet 西藏 |
| 1883.03.05 |  USA | Apostolic Vicariate of Idaho and Montana was renamed as Apostolic Vicariate of Idaho |
| 1883.04.07 |  Turkiye,  Bulgaria | Apostolic Vicariate of Tracia (Bulgarian Rite) was established (from Apostolic Vicariate of Constantinople) |
| 1883.04.20 |  Sri Lanka | Apostolic Vicariate of Kandy was established (from Apostolic Vicariate of Colombo) |
| 1883.04.27 |  Romania | Apostolic Vicariate of Valachie was promoted as Archdiocese of Bucureşti |
| 1883.05.24 |  Mexico | Diocese of Sinaloa was established (from Diocese of Sonora and became suffragan of Guadalajara) |
| 1883.05.31 |  Uganda | Apostolic Vicariate of Nyanza was renamed as Apostolic Vicariate of Victoria-Nyanza |
| 1883.06.01 |  Vietnam | Apostolic Vicariate of Northern Tonking was established (from Apostolic Vicariate of Eastern Tonking) |
| 1883.06.05 |  Ireland | Diocese of Galway was renamed as Diocese of Galway and Kilmacduagh (gained territory from the suppressed Diocese of Kilfenora and Diocese of Kilmacduagh and gained title of Kilfenora) |
| 1883.06.05 | Ireland | Diocese of Kilfenora was suppressed (to Diocese of Galway and Kilmacduagh and united to Diocese of Galway) |
| 1883.06.05 | Ireland | Diocese of Kilmacduagh was suppressed (to Diocese of Galway and Kilmacduagh) |
| 1883.06.12 |  Greece,  North Macedonia | Apostolic Vicariate of Macedonia (Bulgarian Rite) was established (from Apostolic Vicariate of Constantinople) |
| 1883.06.26 |  Benin | Apostolic Prefecture of Dahomey was established (from Apostolic Vicariate of Bight of Benin) |
| 1883.08.31 |  Italy | Territorial Abbacy of Santissimo Salvatore (Italo-Albanese Rite) was restored |
| 1883.10.03 |  China | Apostolic Vicariate of Fujian 福建 was renamed as Apostolic Vicariate of Northern Fo-kien 福建北境 |
| 1883.11.16 |  Argentina | Apostolic Vicariate of Patagonia Septentrional was established (from Metropolitan Archdiocese of Buenos Aires) |
| 1883.11.16 |  Chile | Apostolic Prefecture of Patagonia Meridional, Tierra del Fuego e Islas Malvinas was established (from Metropolitan Archdiocese of Buenos Aires and Diocese of San Carlos de Ancud) |
| 1883.11.23 |  Tanzania | Apostolic Prefecture of Zanguebar was promoted as Apostolic Vicariate of Zanguebar |
| 1883.12.03 | China,  Taiwan | Apostolic Vicariate of Amoy 廈門 was established (from Apostolic Vicariate of Northern Fo-kien 福建北境) |
| 1883.12.21 | China | Apostolic Vicariate of Mongolia 蒙古 was renamed as Apostolic Vicariate of Central Mongolia 中蒙古 (lost territory to establish Apostolic Vicariate of Eastern Mongolia 東蒙古 and Apostolic Vicariate of Southwestern Mongolia 西南蒙古) |
| 1883.12.21 | China | Apostolic Vicariate of Eastern Mongolia 東蒙古 was established (from Apostolic Vicariate of Mongolia 蒙古) |
| 1883.12.21 | China | Apostolic Vicariate of Southwestern Mongolia 西南蒙古 was established (from Apostolic Vicariate of Mongolia 蒙古) |
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