| Date | From | To |
|---|
| unknown | Diocese of Newport and Menevia, Wales, Great Britain
Diocese of Shrewsbury, England, Great Britain
| Territory Lost | Vicariate Apostolic of Wales, Wales, Great Britain
| Erected |
| unknown | Diocese of Newport and Menevia, Wales, Great Britain
| Name Changed | Diocese of Newport, Wales, Great Britain
| Name Changed |
| unknown | | | Congregation of Missionaries of the Holy Family
| Founded |
| 20 Mar | Diocese of Nueva Pamplona, Colombia
| Territory Lost | Diocese of Socorro, Colombia
| Erected |
| 24 Mar | Diocese of Yucatán (Mérida), Yucatán, México
| Territory Lost | Diocese of Campeche, Campeche, México
| Erected |
| 15 Apr | | | Vicariate Apostolic of Upper Tonking {Tonkino Superiore}, Viêt Nam
| Erected |
| 28 Jun | Prefecture Apostolic of Costa d’Oro {Gold Coast}, Ghana
| Territory Lost | Prefecture Apostolic of Costa d’Avorio
| Erected |
| 15 Nov | Diocese of Niterói (Nictheroy; Petrópolis), Brazil
| Territory Lost | Diocese of Espírito Santo, Brazil
| Erected |
| 26 Nov | | | Eparchy of Alexandria {Alessandria} (Coptic), Egypt
| Erected |
| 26 Nov | | | Eparchy of Luqsor {Tebe} (Coptic), Egypt
| Erected |
| 26 Nov | | | Eparchy of Minya {Ermopoli Maggiore; Minieh} (Coptic), Egypt
| Erected |
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