| Date | From | To |
|---|
| 22 Mar | Diocese ofAntwerpen {Antwerp, Anvers},Belgium
Diocese ofGent {Ghent, Gand},Belgium
Diocese ofRoermond,Netherlands | Territory Lost | Vicariate Apostolic ofBreda,Netherlands | Erected |
| 22 Mar | Diocese ofRoermond,Netherlands
Vicariate Apostolic of’s-Hertogenbosch (Bois-le-Duc),Netherlands | Territory Lost | Vicariate Apostolic ofGrave,Netherlands | Erected |
| 22 Mar | Diocese ofRoermond,Netherlands
Vicariate Apostolic of’s-Hertogenbosch (Bois-le-Duc),Netherlands | Territory Lost | Vicariate Apostolic ofMegen,Netherlands | Erected |
| 28 May | Diocese ofAyacucho o Huamanga (Guamanga),Peru
Diocese ofCuenca,Ecuador
Archdiocese ofLima,Peru
Diocese ofPopayán,Colombia
Diocese ofQuito,Ecuador
Diocese ofTrujillo,Peru | Territory Lost | Diocese ofMaynas,Peru | Erected |
| 1 Jun | Diocese ofAosta,Italy | Suppressed |
| 1 Jun | Diocese ofBiella,Italy | Suppressed | Diocese ofVercelli,Italy | Territory Added |
| 24 Nov | Diocese ofSantiago de Cuba | Elevated | Archdiocese ofSantiago de Cuba | Elevated |
| 27 Nov | Diocese ofCaracas, Santiago de Venezuela | Elevated | Archdiocese ofCaracas, Santiago de Venezuela | Elevated |
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