| Date | From | To |
|---|
| unknown | | | Broeders van de Onbevlekte Ontvangenis van de Allerheiligste Maagd en Moeder Gods Maria
| Founded |
| 8 Mar | Vicariate Apostolic of Bombay, India
| Territory Lost | Vicariate Apostolic of Poona, India
| Erected |
| 6 Jun | Diocese of Mariana, Brazil
| Territory Lost | Diocese of Diamantina, Brazil
| Erected |
| 6 Jun | Diocese of Olinda, Brazil
| Territory Lost | Diocese of Fortaleza (Ceará), Brazil
| Erected |
| 14 Jun | Diocese of Corneto (Tarquinia) e Montefiascone, Italy
Diocese of Civitavecchia, Italy
| Split | Diocese of Montefiascone, Italy
Diocese of Tarquinia e Civitavecchia, Italy
| United |
| 17 Jun | Diocese of Périgueux, France
| Name Changed | Diocese of Périgueux (-Sarlat), France
| Name Changed |
| 12 Jul | Diocese of Coutances, France
| Name Changed | Diocese of Coutances (-Avranches), France
| Name Changed |
| 12 Aug | Territorial Abbey of Wettingen, Austria
| Name Changed | Territorial Abbey of Wettingen-Mehrerau, Austria
| Name Changed |
| 31 Aug | Diocese of Michoacán, México
| Territory Lost | Diocese of San Luis Potosí, México
| Erected |
| 16 Nov | Diocese of Făgăraş (Romanian), Romania
| Name Changed | Archdiocese of Făgăraş şi Alba Iulia (Romanian), Romania
| Name Changed |
| 8 Dec | | | Missionaries of the Sacred Heart of Jesus
| Founded |
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