| Date | From | To | ||
|---|---|---|---|---|
| unknown | Archdiocese of Luluabourg, Congo (Dem. Rep.) | Territory Lost | ||
| 18 Jan | Diocese of Quy Nhơn (Qui Nhơn), Viet Nam | Territory Lost | Diocese of Ðà Nẵng, Viet Nam | Erected |
| 18 Jan | Prefecture Apostolic of Oyo, Nigeria | Elevated | Diocese of Oyo, Nigeria | Elevated |
| 18 Jan | Diocese of Douala, Cameroon | Territory Lost | Diocese of Sangmélima, Cameroon | Erected |
| 11 Feb | Nunciature to Burundi | Established | ||
| 16 Feb | Diocese of Lingayen-Dagupan, Philippines
Diocese of San Fernando, Philippines | Territory Lost | Diocese of Cabanatuan, Philippines (Nueva Ecija) | Erected |
| 16 Feb | Diocese of San Fernando, Philippines | Territory Lost | Diocese of Tarlac, Philippines | Erected |
| 16 Feb | Diocese of Lingayen-Dagupan, Philippines | Elevated | Archdiocese of Lingayen-Dagupan, Philippines | Elevated |
| 16 Feb | Delegation to Belgian Congo | Elevated | Nunciature to Congo, Democratic Republic of | Elevated |
| 1 Mar | Diocese of Moshi, Tanzania | Territory Lost | Diocese of Arusha, Tanzania | Erected |
| 1 Mar | Prefecture Apostolic of Hwalien, Taiwan | Elevated | Diocese of Hwalien, Taiwan | Elevated |
| 1 Mar | Prefecture Apostolic of Wankie, Zimbabwe | Elevated | Diocese of Wankie, Zimbabwe | Elevated |
| 1 Mar | Diocese of Calabar, Nigeria | Territory Lost | Diocese of Ikot Ekpene, Nigeria | Erected |
| 1 Mar | Vicariate Apostolic of Vientiane, Laos | Territory Lost | Vicariate Apostolic of Luang Prabang, Laos | Erected |
| 13 Mar | Archdiocese of Tegucigalpa, Honduras (Departments of Comayagua and La Paz) | Territory Lost | Diocese of Comayagua, Honduras | Erected |
| 25 Mar | Missionaries of Charity Brothers | Founded | ||
| 28 Mar | Pontifical Commission for the Authentic Interpretation of the Code of Canon Law, Roman Curia | Name Changed | Pontifical Commission for the Revision of the Code of Canon Law, Roman Curia | Name Changed |
| 5 Apr | Archdiocese of Cotonou, Benin (Abomey, Savalou, Savé, Dassa and Zagnanado)
Diocese of Porto Novo, Benin (Zagnanado) | Territory Lost | Diocese of Abomey, Benin | Erected |
| 7 Apr | Diocese of Chiclayo, Peru (Chota and Cutervo) | Territory Lost | Territorial Prelature of Chota, Peru | Erected |
| 22 Apr | Diocese of Seckau, Austria | Name Changed | Diocese of Graz-Seckau, Austria | Name Changed |
| 27 Apr | Archdiocese of Ottawa, Ontario, Canada | Territory Lost | Diocese of Hull, Québec, Canada | Erected |
| 29 Apr | Territorial Prelature of Rio Branco, Brazil | Name Changed | Territorial Prelature of Roraima, Brazil | Name Changed |
| 10 May | Diocese of Puerto Montt, Chile | Elevated | Archdiocese of Puerto Montt, Chile | Elevated |
| 10 May | Diocese of Osorno, Chile (from Concepción) | Metropolitan Changed | ||
| 10 May | Diocese of San Carlos de Ancud, Chile (from Concepción) | Metropolitan Changed | ||
| 10 May | Diocese of Punta Arenas, Chile (from Concepción) | Metropolitan Changed | ||
| 25 Jun | Archdiocese of Belém do Pará, Brazil (Cachoeira do Arari, Ponta de Pedras, Santa Cruz do Ararí, Muanâ, Sâo Sebastiâo da Boa Vista, and Curralinho) | Territory Lost | Territorial Prelature of Ponta de Pedras, Para, Brazil | Erected |
| 28 Jun | Vicariate Apostolic of Hollandia, Indonesia | Name Changed | Vicariate Apostolic of Kota Baru, Indonesia | Name Changed |
| 1 Jul | Diocese of Silva Porto, Angola (Moxico) | Territory Lost | Diocese of Luso, Angola | Erected |
| 6 Jul | Vicariate Apostolic of San Pedro Sula, Honduras | Elevated | Diocese of San Pedro Sula, Honduras | Elevated |
| 6 Jul | Apostolic Exarchate of United States of America (Ruthenian), Pennsylvania (Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, D.C., Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida, and Eastern Pennsylvania) | Territory Lost | Eparchy of Passaic (Ruthenian), New Jersey, USA | Erected |
| 6 Jul | Apostolic Exarchate of United States of America (Ruthenian), Pennsylvania | Territory Lost | Eparchy of Pittsburgh (Ruthenian), Pennsylvania, USA | Erected |
| 6 Jul | Prefecture Apostolic of Kayes, Mali | Elevated | Diocese of Kayes, Mali | Elevated |
| 6 Jul | Prefecture Apostolic of Kenge, Congo (Dem. Rep.) | Elevated | Diocese of Kenge, Congo (Dem. Rep.) | Elevated |
| 6 Jul | Prefecture Apostolic of Sikasoo, Mali | Elevated | Diocese of Sikasso, Mali | Elevated |
| 13 Jul | Diocese of Hermosillo, Sonora, México | Elevated | Archdiocese of Hermosillo, Sonora, México | Elevated |
| 13 Jul | Vicariate Apostolic of Tijuana, Baja California Norte, México | Elevated | Diocese of Tijuana, Baja California Norte, México | Elevated |
| 13 Jul | Archdiocese of Panamá (Veraguas) | Territory Lost | Diocese of Santiago de Veraguas, Panama | Erected |
| 13 Jul | Archdiocese of Manaus, Amazonas, Brazil (Autazes, Axini, Borba, Canûma, Miriti, Nova Olinda do Norte, Novo Aripuana, and Prainha)
Territorial Prelature of Parintins, Amazonas, Brazil (Parintine, Mundurucús, and Paraconi) | Territory Lost | Territorial Prelature of Borba, Amazonas, Brazil | Erected |
| 13 Jul | Archdiocese of Manaus, Amazonas, Brazil (Aiapuá, Anania, Anori, Beruri, Cámara, Coarí, Codajás, Manacapuru, and Piorini) | Territory Lost | Territorial Prelature of Coari, Amazonas, Brazil | Erected |
| 13 Jul | Archdiocese of Manaus, Amazonas, Brazil (Eva, Itacoatiara, Itapeassu, Itapiranga, São Sebastiào, Silves, Urucará, and Urucurituba) | Territory Lost | Territorial Prelature of Itacoatiara, Amazonas, Brazil | Erected |
| 13 Jul | Diocese of Ciudad Obregón, Sonora, México (from Chihuahua) | Metropolitan Changed | ||
| 21 Jul | Diocese of Nampula, Mozambique (Nyassa) | Territory Lost | Diocese of Vila Cabral, Mozambique | Erected |
| 5 Aug | Territorial Abbey of Ndanda, Tanzania (Tunduru, Masasi, and Nachingwea west of Mnero) | Territory Lost | Diocese of Nachingwea, Tanzania | Erected |
| 12 Aug | Archdiocese of Tucumán, Argentina (Chicligasta, Graneros, Leales, Monteros, and Rio Chico) | Territory Lost | Diocese of Concepción, Argentina | Erected |
| 12 Aug | Archdiocese of Córdoba, Argentina (San Javier, San Alberto, Pocho, Minas, Cruz del Eje, Ischilin, Sobremonte, Tulumba, and parts of Rio Seco) | Territory Lost | Diocese of Cruz del Eje, Argentina | Erected |
| 12 Aug | Diocese of Rosario, Argentina | Territory Lost | Diocese of Venado Tuerto, Argentina | Erected |
| 12 Aug | Diocese of Resistencia, Argentina (Almirante Brown, Comandante Fernández, Chacabuco, 12 de October, Fray Justo Santa Maria de Oro, General Belgrano, General Güemes, Independencia, Maipu, Fontana, 9 de Julio, O'Higgins, Quitilipi , San Lorenzo, and 25 de Mayo) | Territory Lost | Diocese of Presidencia Roque Sáenz Peña, Argentina | Erected |
| 12 Aug | Diocese of Rosario, Argentina | Elevated | Archdiocese of Rosario, Argentina | Elevated |
| 12 Aug | Diocese of San Nicolás de los Arroyos, Argentina (from Buenos Aires) | Metropolitan Changed | ||
| 12 Sep | Workers of the Kingdom of Christ (Operarios del Reino de Cristo) | Founded | ||
| 13 Sep | Vicariate Apostolic of Aitape, Papua New Guinea (Western Part) | Territory Lost | Prefecture Apostolic of Vanimo, Papua New Guinea | Erected |
| 13 Sep | Archdiocese of Abidjan, Côte d’Ivoire (Abengourou, Agnibilekrou, and Adzopé)
Diocese of Bouaké, Côte d’Ivoire (Bongouanou and Arrah) Diocese of Katiola, Côte d’Ivoire (Bini-Madam, Bondoukou, Bouna, Nassian, Tanda, and Tehini) | Territory Lost | Diocese of Abengourou, Côte d’Ivoire | Erected |
| 13 Sep | Diocese of Ajmer and Jaipur, India (Raisen)
Diocese of Indore, India (Bhopal, Sehore, Vishisha, and Hoshangabad) Diocese of Jabalpur, India (Sagar) | Territory Lost | Archdiocese of Bhopal, India | Erected |
| 13 Sep | Prefecture Apostolic of Shikoku, Japan | Elevated | Diocese of Takamatsu, Japan | Elevated |
| 13 Sep | Diocese of Jabalpur, India (from Nagpur) | Metropolitan Changed | ||
| 13 Sep | Diocese of Raigarh-Ambikapur, India (from Nagpur) | Metropolitan Changed | ||
| 13 Sep | Diocese of Indore, India (from Agra) | Metropolitan Changed | ||
| 28 Sep | Diocese of Iguatu, Ceara, Brazil
Diocese of Sobral, Ceara, Brazil | Territory Lost | Diocese of Crateús, Ceara, Brazil | Erected |
| 7 Oct | Archdiocese of Seoul, Korea (South) (Su-Won and Bu-Cheon-Kun, Si-Hung-Kun, Hwa-Seong-Kun, PyeongTaek-Kun, Kwang-Ju- Kun, Yong-In-Kun, An-Seong-Kun, I-Keon-Kun, Yang-Pyeong-Kun, and Yeo-Ju-Kun) | Territory Lost | Diocese of Suwon, Korea (South) | Erected |
| 7 Oct | Little Mission for the Deaf and Dumb | Approbation | ||
| 12 Oct | Archdiocese of Zamboanga, Philippines (Basilan City) | Territory Lost | Territorial Prelature of Isabela, Philippines | Erected |
| 11 Nov | Archdiocese of Belo Horizonte, Minas Gerais, Brazil (Povoado dos Lopes in Candeias) | Territory Lost | Diocese of Oliveira, Minas Gerais, Brazil | Territory Added |
| 11 Nov | Archdiocese of Belo Horizonte, Minas Gerais, Brazil (Cápela dos Alves in Bom Despacho) | Territory Lost | Diocese of Luz, Minas Gerais, Brazil | Territory Added |
| 11 Nov | Archdiocese of Belo Horizonte, Minas Gerais, Brazil (Sao José do Felipe and Santo Antonio do Morro Vermelho) | Territory Lost | Diocese of Sete Lagoas, Minas Gerais, Brazil | Territory Added |
| 11 Nov | Archdiocese of Belo Horizonte, Minas Gerais, Brazil (Nossa Senhora da Conceiçâo, Conceiçâo do Rio Acima, and Santo Antonio de Vigario da Vara along with São Geraldo de Jacaranda and Nossa Senhora das Graças de Sesmaria) | Territory Lost | Archdiocese of Mariana, Minas Gerais, Brazil | Territory Added |
| 11 Nov | Archdiocese of Mariana, Minas Gerais, Brazil (São José do Paraopeba in Brumadinho; Nossa Senhora da Conceiçâo de Arrojado Lisboa and Nossa Senhora do Parto de Chacrinha in Jeceaba) | Territory Lost | Archdiocese of Belo Horizonte, Minas Gerais, Brazil | Territory Added |
| 11 Nov | Diocese of Sete Lagoas, Minas Gerais, Brazil (Sant'Ana de Cachoeirinha and Nossa Senhora da Conceiçâo de Urucuia) | Territory Lost | Archdiocese of Belo Horizonte, Minas Gerais, Brazil | Territory Added |
| 12 Nov | Diocese of Astrida, Rwanda | Name Changed | Diocese of Butare, Rwanda | Name Changed |
| 16 Nov | Diocese of Mysore, India (Shimoga, Chikmagalur, and Hassan) | Territory Lost | Diocese of Chikmagalur, India | Erected |
| 16 Nov | Prefecture Apostolic of Kitui, Kenya | Elevated | Diocese of Kitui, Kenya | Elevated |
| 18 Nov | Diocese of Bosna (Djakovo) et Srijem, Croatia | Name Changed | Diocese of Djakovo o Bosna i Srijem, Croatia | Name Changed |
| 18 Nov | Archdiocese of Belém do Pará, Brazil (Portel and Melgaço) | Territory Lost | Territorial Prelature of Marajó, Para, Brazil | Territory Added |
| 26 Nov | Vicariate Apostolic of Thakhek, Laos | Name Changed | Vicariate Apostolic of Savannakhet, Laos | Name Changed |
| 5 Dec | Archdiocese of Quito, Ecuador | Territory Lost | Diocese of Latacunga, Ecuador (Cotopaxi) | Erected |
| 5 Dec | Broeders van de Onbevlekte Ontvangenis van de Allerheiligste Maagd en Moeder Gods Maria | Approbation | ||
| 10 Dec | Diocese of Moshi, Tanzania | Territory Lost | Prefecture Apostolic of Same, Tanzania (Pare) | Erected |
| 16 Dec | Diocese of Nicotera e Tropea, Italy (Aiello Calabro, Serra d'Aiello, Amantea, S. Pietro in Amantea, Belmonte Calabro, Cleto, Falconara Albanese, Fiumefreddo Bruzio and Longobardi plus Laghitelli and Terrati) | Territory Lost | Archdiocese of Cosenza, Italy | Territory Added |
| 16 Dec | Diocese of Nicotera e Tropea, Italy (Falerna, Nocera Tirinese, and S. Mango d'Aquino) | Territory Lost | Diocese of Nicastro, Italy | Territory Added |
| 23 Dec | Archeparchy of Lviv (Ukrainian), Ukraine (became a Major Archdiocese) | Elevated | ||
| 31 Dec | Delegation to Korea | Elevated | Nunciature to Korea (to Internunciature) | Elevated |
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