| Year | From | To | ||
|---|---|---|---|---|
| 1515 | Diocese of Arezzo, Italy | Territory Lost | Diocese of Sansepolcro (Borgo San Sepolcro), Italy | Erected |
| 1653 | Diocese of Pistoia, Italy | Name Changed | Diocese of Pistoia e Prato, Italy | Name Changed |
| 1805 | Diocese of Chełm and Lublin, Poland | Name Changed | Diocese of Lublin, Poland | Name Changed |
| 1818 | Eparchy of Mukachevo (Munkács) (Ruthenian), Ukraine | Territory Lost | Eparchy of Prešov (Prjašev, Eperjes) (Slovak), Slovakia | Erected |
| 1828 | Archdiocese of Trani e Bisceglie, Italy | Name Changed | Archdiocese of Trani e Nazareth e Bisceglie, Italy | Name Changed |
| 1844 | Diocese of Halifax, Nova Scotia, Canada (Counties of Cape Breton, Victoria, Inverness, and Richmond on Cape Breton Island, and the Counties of Guysborough, Antigonish, and Pictou on the mainland) | Territory Lost | Diocese of Arichat, Nova Scotia, Canada | Erected |
| 1864 | Diocese of Malta (Gozo and Comino islands) | Territory Lost | Diocese of Gozo, Malta | Erected |
| 1871 | Diocese of Saint-Boniface, Manitoba, Canada | Territory Lost | Diocese of Saint-Albert, Alberta, Canada | Erected |
| 1871 | Diocese of Saint-Boniface, Manitoba, Canada | Elevated | Archdiocese of Saint-Boniface, Manitoba, Canada | Elevated |
| 1871 | Vicariate Apostolic of Athabaska Mackenzie, Alberta, Canada (to Saint-Boniface) | Metropolitan Changed | ||
| 1871 | Vicariate Apostolic of British Columbia, Canada (to Saint-Boniface) | Metropolitan Changed | ||
| 1889 | Vicariate Apostolic of Northern Minnesota, USA (Name changed and Vicariate raised to a Diocese) | Territory Lost | Diocese of Saint Cloud, Minnesota, USA | Erected |
| 1898 | Ukrainian Studite Monks (Ukrainian) | Founded | ||
| 1918 | Diocese of Lutsk, Zhytomyr, and Kamyanets-Podilskyi (Łuck, Zytomierz, and Kamienec), Ukraine | Split | Diocese of Kamyanets-Podilskyi, Ukraine
Diocese of Luceoria o Łuck e Zytomir o Zytomierz, Ukraine | Split |
| 1918 | Archdiocese of Mohilev, Belarus
Diocese of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | Territory Lost | Diocese of Riga, Latvia | Erected |
| 1927 | Diocese of Borgo San Donnino, Italy | Name Changed | Diocese of Fidenza, Italy | Name Changed |
| 1973 | Diocese of Nyeri, Kenya (Isiolo) | Territory Lost | Diocese of Meru, Kenya | Territory Added |
| 2018 | Diocese of Chifeng [Chihfeng], China
Diocese of Jinzhou [Jehol], China | Territory Lost | Diocese of Chengde, China (Chengden (Chengde, Xinglong, Pingquan , Luanping, Longhua, Fengning, Kuancheng, and Weichang along with Shuangqiao, Shuangluan, and Yingshouyingzikuang)) | Erected |
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