| Date | From | To | ||
|---|---|---|---|---|
| unknown | Fraternity of Saint Vincent Ferrer | Founded | ||
| unknown | Mission "Sui Iuris" of Baghdad, Iraq | Suppressed | Archdiocese of Baghdad, Iraq | Territory Added |
| 8 Jan | Territorial Prelature of Huautla, Oaxaca, M騙ico (Tuxtepec along with Sochiapan and Tlacoatzintepec (in Cuicatl疣)) | Territory Lost | Diocese of Tuxtepec, Oaxaca, M騙ico | Erected |
| 8 Jan | Archdiocese of Santiago de Cuba (Las Tunas (Iobabo, Majibacoa, Manat?, Men駭dez, Puerto Padre, and Tunas) | Territory Lost | Diocese of Holgu?n, Cuba | Erected |
| 15 Jan | Archdiocese of Milano {Milan}, Italy (Torrevecchia Pia (Nativit? di Maria Vergine, Ss. Astanzio e Antoniano, and Ss. Pietro e Paolo)) | Territory Lost | Diocese of Pavia, Italy | Territory Added |
| 20 Jan | Diocese of Lodi, Italy (Castel Lambro (in Marzano Pavese) and parts of Bascap? (Guastalla, Mangialupo, Piacentina, Foppa, Gamborello, Barbetto, S. Zeno 1ー, S. Zeno 2ー Bosco, Villarzino, S. Martina)) | Territory Lost | Diocese of Pavia, Italy | Territory Added |
| 20 Jan | Diocese of Pavia, Italy (Campo Rinaldo and Corte S. Andrea (in Miradolo and Senna Lodigiano)) | Territory Lost | Diocese of Lodi, Italy | Territory Added |
| 5 Feb | Diocese of Tlalnepantla, M騙ico, M騙ico (Coacalco, Coyotepec, Chapa de Mota, Cuautitl疣, Cuautitl疣 Izcalli, Huehuetoca, Nicol疽 Romero, Teoloyucan, Tepozotl疣, Tultitl疣, and Villa del Carbon)
Diocese of Texcoco, M騙ico, M騙ico (Apaxco, Hueypoxtla, Melchor Ocampo, Nextlalpan, Tequisquiac, Tultepec, Xaltengo, and Zumpango) | Territory Lost | Diocese of Cuautitl疣, M騙ico, M騙ico | Erected |
| 5 Feb | Diocese of Texcoco, M騙ico, M騙ico (Amecameca, Atlahutla, Ayapango, Cocotitl疣, Chalco, Ecatzingo, Ixtapaluca, Juchitepec, La Paz - Los Reyes, Netzahualc?yotl, Ozumba, Temamatla, Tenango del Aire, Tepetlixpa, and Tlalmanalco) | Territory Lost | Diocese of Netzahualc?yotl, M騙ico, M騙ico | Erected |
| 17 Feb | Nunciature to Grenada, Antilles | Established | ||
| 3 Mar | Vicariate Apostolic of Sofia e Plovdiv, Bulgaria | Elevated | Diocese of Sofia e Plovdiv, Bulgaria | Elevated |
| 15 Mar | Prefecture Apostolic of Awasa, Ethiopia | Elevated | Vicariate Apostolic of Awasa, Ethiopia | Elevated |
| 28 Mar | Vicariate Apostolic of Northern Norway {Norvegia Settentrionale} | Elevated | Territorial Prelature of Troms?, Norway | Elevated |
| 28 Mar | Vicariate Apostolic of Central Norway {Norvegia Centrale} | Elevated | Territorial Prelature of Trondheim, Norway | Elevated |
| 29 Mar | Archdiocese of Juiz de Fora, Minas Gerais, Brazil (Al駑 Paraiba, Estrela Dalva, Pirapetinga, Santo Antonio do Aventureiro, and Volta Grande) | Territory Lost | Diocese of Leopoldina, Minas Gerais, Brazil | Territory Added |
| 4 Apr | Archdiocese of Cosenza, Italy
Diocese of San Marco e Bisignano, Italy | United | Archdiocese of Cosenza e Bisignano, Italy | United |
| 4 Apr | Diocese of San Marco e Bisignano, Italy | Split | Diocese of San Marco Argentano-Scalea, Italy | Split |
| 4 Apr | Diocese of Cassano all’Jonio, Italy (Scalea, Aieta, Orsomarso, Papasidero, Praia a Mare, San Nicola Arcella, Santa Domenica Taleo, Santa Maria del Cedro, Tortora, and Verbicaro) | Territory Lost | Diocese of San Marco Argentano-Scalea, Italy | Territory Added |
| 4 Apr | Diocese of Crotone (Cotrone), Italy (S. Leonardi (in Cutro)) | Territory Lost | Archdiocese of Santa Severina, Italy | Territory Added |
| 4 Apr | Diocese of Cariati, Italy (Belvedere di Spinello, Caccuri, Carfizzi, Casabona, Castelsilano, Cerenzia, Ciro, Ciro Marina, Crucoli, Melissa, Pallagorio, S. Nicola dell'Alto, Savelli, Strongoli, Umbriatico, and Verzino) | Territory Lost | Diocese of Crotone (Cotrone), Italy | Territory Added |
| 4 Apr | Diocese of Cariati, Italy
Archdiocese of Rossano, Italy | United | Archdiocese of Rossano e Cariati, Italy | United |
| 18 Apr | Territorial Prelature of Rubiataba, Goias, Brazil | Name Changed | Territorial Prelature of Rubiataba-Mozarl穗dia, Goias, Brazil | Name Changed |
| 19 Apr | Nunciature to Barbados, Antilles | Established | ||
| 28 Apr | Diocese of Barra (do Rio Grande), Bahia, Brazil (Barra do Mendes, Central Ibipeba, Jussara, Presidente Dutra, and Uiba?)
Diocese of Ruy Barbosa (Rui Barbosa), Bahia, Brazil (Irec?, Ibitita, Iraquara, Cafarnaum, Canarana, Len輟is, Morro do Chapeu, Palmeiras, Seabra, and Souto Soares) | Territory Lost | Diocese of Irec?, Bahia, Brazil | Erected |
| 30 Apr | Diocese of Foggia, Italy | Elevated | Archdiocese of Foggia, Italy | Elevated |
| 30 Apr | Archdiocese of Manfredonia (e Vieste), Italy (no longer a Metropolitan) | Elevated | ||
| 30 Apr | Archdiocese of Sorrento, Italy (no longer a Metropolitan) | Elevated | ||
| 30 Apr | Archdiocese of Conza-Sant’Angelo dei Lombardi-Bisaccia, Italy (no longer a Metropolitan) | Elevated | ||
| 30 Apr | Archdiocese of Capua, Italy (no longer a Metropolitan) | Elevated | ||
| 30 Apr | Diocese of Lacedonia, Italy (from Conza-Sant’Angelo dei Lombardi-Bisaccia) | Metropolitan Changed | ||
| 30 Apr | Diocese of Nusco, Italy (from Salerno (-Acerno)) | Metropolitan Changed | ||
| 30 Apr | Territorial Abbey of Montevergine, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Alife, Italy (from Benevento) | Metropolitan Changed | ||
| 30 Apr | Diocese of Aversa, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Caiazzo, Italy (from Capua) | Metropolitan Changed | ||
| 30 Apr | Diocese of Calvi e Teano, Italy (from Capua) | Metropolitan Changed | ||
| 30 Apr | Diocese of Caserta, Italy (from Capua) | Metropolitan Changed | ||
| 30 Apr | Diocese of Castellammare di Stabia, Italy (from Sorrento) | Metropolitan Changed | ||
| 30 Apr | Diocese of Sessa Aurunca, Italy (from Capua) | Metropolitan Changed | ||
| 30 Apr | Territorial Prelature of Pompei o Beatissima Vergine Maria del Santissimo Rosario, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Archdiocese of Amalfi, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Campagna, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Cava e Sarno, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Territorial Abbey of Santissima Trinit? di Cava de’ Tirreni, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Troia, Italy (from Immediately Subject) | Metropolitan Changed | ||
| 30 Apr | Diocese of Ascoli Satriano e Cerignola, Italy (from Benevento) | Metropolitan Changed | ||
| 30 Apr | Diocese of Lucera, Italy (from Benevento) | Metropolitan Changed | ||
| 30 Apr | Diocese of San Severo, Italy (from Benevento) | Metropolitan Changed | ||
| 3 May | Vicariate Apostolic of Caroline and Marshall Islands, Federated States of Micronesia, Pacific (Oceania) | Elevated | Diocese of Carolines-Marshalls, Federated States of Micronesia, Pacific (Oceania) | Elevated |
| 12 May | Diocese of Mackenzie-Fort Smith, Northwest Territories, Canada (Territory between 55 and 58 degree latitude and 110 and 113 longitude) | Territory Lost | Diocese of Saint Paul in Alberta, Canada | Territory Added |
| 16 May | Diocese of Silva Porto, Angola | Name Changed | Diocese of Kwito-Bi?, Angola | Name Changed |
| 16 May | Diocese of Luso, Angola | Name Changed | Diocese of Lwena, Angola | Name Changed |
| 16 May | Diocese of Serpa Pinto, Angola | Name Changed | Diocese of Menongue, Angola | Name Changed |
| 16 May | Diocese of Pereira de E軋, Angola | Name Changed | Diocese of Ondjiva, Angola | Name Changed |
| 16 May | Diocese of Henrique de Carvalho, Angola | Name Changed | Diocese of Saurimo, Angola | Name Changed |
| 16 May | Diocese of Carmona e S縊 Salvador, Angola | Name Changed | Diocese of Uije, Angola | Name Changed |
| 21 May | Diocese of Barra (do Rio Grande), Bahia, Brazil (Angical, Baian?polis, Barreiras, Brejol穗dia, Catol穗dia, Cotegipe, Crist?polis, Formosa do Rio Preto, Riach與 das Neves, Santa Rita de C灣sia, S穉 Desid鑽io, and Tabocas do Brejo Velho) | Territory Lost | Diocese of Barreiras, Bahia, Brazil | Erected |
| 1 Jun | Diocese of Itabira, Brazil | Name Changed | Diocese of Itabira-Fabriciano, Minas Gerais, Brazil | Name Changed |
| 1 Jun | Diocese of Rawalpindi, Pakistan | Name Changed | Diocese of Islamabad-Rawalpindi, Pakistan | Name Changed |
| 10 Jun | Diocese of Mileto, Italy (Palmi, Anoia, Pietro di Carid?, San Proeopio, Seminara, Serrata, Sinopoli, Taurianova along with St. Michael the Archangel in Acquaro di Cosoleto) | Territory Lost | Diocese of Oppido Mamertina, Italy | Territory Added |
| 10 Jun | Diocese of Oppido Mamertina, Italy | Name Changed | Diocese of Oppido Mamertina-Palmi, Italy | Name Changed |
| 10 Jun | Diocese of Mileto, Italy (S. Maria a Monte Carmelo in Ceramida) | Territory Lost | Archdiocese of Reggio Calabria, Italy | Territory Added |
| 22 Jun | Sons of the Sacred Heart of Jesus
Missionaries of the Sons of the Sacred Heart of Jesus | United | Comboni Missionaries of the Heart of Jesus | United |
| 23 Jun | Parochial Cooperators of Christ the King | Decretum Laudis | ||
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