Date | From | To |
12 Jan | Diocese of Allahabad, India (Jhansi, Jalaun, Eamirpur, and Banda)
| Territory Lost | Prefecture Apostolic of Jhansi, India
| Erected |
12 Jan | Archdiocese of Agra, India (Shahjahanpur and Piltbhit)
Diocese of Allahabad, India (Lucknow, Unnao, Barabanki, Gonda, Hardoi, Sitapur, Baliraichj Kheri, Nainital, and Almora)
| Territory Lost | Diocese of Lucknow, India
| Erected |
12 Jan | Vicariate Apostolic of Wonsan, Korea (North) (Qensan (or Wonsan) and Ampen, Tokugen, Bunsen, and Eo gen)
| Territory Lost | Territorial Abbey of Tokugen o Tokwon, Korea (North)
| Erected |
12 Jan | Vicariate Apostolic of Wonsan, Korea (North)
| Name Changed | Vicariate Apostolic of Kanko o Hamheung, Korea (North)
| Name Changed |
13 Jan | Vicariate Apostolic of Keewatin, Manitoba, Canada (Territory of the Montagnais)
| Territory Lost | Vicariate Apostolic of Baie d’Hudson {Hudson Bay}, Manitoba, Canada
| Territory Added |
13 Feb | Diocese of Mysore, India (Bangalore, Kolara, Tumakuru, and Chitradurga)
| Territory Lost | Diocese of Bangalore, India
| Erected |
13 Feb | Prefecture Apostolic of Fushun, China
| Elevated | Vicariate Apostolic of Fushun [Fushun], China
| Elevated |
13 Feb | Diocese of Nellore, India (Guntur)
| Territory Lost | Diocese of Guntur, India
| Erected |
13 Feb | Vicariate Apostolic of Gimma, Ethiopia (Gambattà-Gudella and part of Voliam)
Prefecture Apostolic of Neghelli, Ethiopia (Gambattà (left bank of the river Billate))
| Territory Lost | Prefecture Apostolic of Hosanna, Ethiopia
| Erected |
13 Feb | Vicariate Apostolic of Gimma, Ethiopia (Guraghe Hadia)
| Territory Lost | Prefecture Apostolic of Endeber, Ethiopia
| Erected |
13 Feb | Diocese of Coimbatore, India (Nilgiris and area north of the river Bhavani and its tributary Moyar)
| Territory Lost | Diocese of Mysore, India
| Territory Added |
17 Feb | Diocese of San Carlos de Ancud, Chile (Southern part)
| Territory Lost | Prefecture Apostolic of Aysén, Chile
| Erected |
29 Feb | Diocese of Trujillo, Peru (Piura and Tumbes)
| Territory Lost | Diocese of Piura, Peru
| Erected |
2 Mar | Archdiocese of Urbino, Italy
| Territory Lost | Diocese of Urbania e Sant’Angelo in Vado, Italy (St. Peter in Metola)
| Territory Added |
9 Apr | Vicariate Apostolic of Costa d’Avorio (Right bank of the river Bandama (except Tiassalé))
| Territory Lost | Vicariate Apostolic of Sassandra, Côte d’Ivoire
| Erected |
9 Apr | Vicariate Apostolic of Costa d’Avorio
| Name Changed | Vicariate Apostolic of Abidjan, Côte d’Ivoire
| Name Changed |
9 Apr | Mission "Sui Iuris" of Kiamusze [Jiamusi], China
| Elevated | Prefecture Apostolic of Jiamusi [Kiamusze], China
| Elevated |
28 May | Vicariate Apostolic of Oubangui Chari, Central African Republic (Southern part)
| Territory Lost | Vicariate Apostolic of Brazzaville, Congo
| Territory Added |
28 May | Vicariate Apostolic of Foumban, Cameroon
Vicariate Apostolic of Oubangui Chari, Central African Republic
| Territory Lost | Prefecture Apostolic of Berbérati, Central African Republic
| Erected |
28 May | Vicariate Apostolic of Oubangui Chari, Central African Republic
| Name Changed | Vicariate Apostolic of Bangui, Central African Republic
| Name Changed |
28 May | Vicariate Apostolic of Süchow [Xuzhou], China (area north and east of Lake Weishan)
| Territory Lost | Vicariate Apostolic of Yenchowfu, China
| Territory Added |
11 Jun | | | Scarboro Foreign Mission Society
| Approbation |
22 Jun | | | Archdiocese of Cuiabá, Mato Grosso, Brazil (Boundaries adjusted)
Territorial Prelature of Diamantino, Mato Grosso, Brazil (Boundaries adjusted)
Diocese of São Luíz de Cáceres, Mato Grosso, Brazil (Boundaries adjusted)
| Territory Added |
25 Jun | Vicariate Apostolic of Batavia, Indonesia (Central Java (Midden-Java))
| Territory Lost | Vicariate Apostolic of Semarang, Indonesia
| Erected |
25 Jun | Mission "Sui Iuris" of Bikoro, Congo (Dem. Rep.)
| Elevated | Prefecture Apostolic of Bikoro, Congo (Dem. Rep.)
| Elevated |
25 Jun | Vicariate Apostolic of Hangchow [Hangzhou], China (Kinhwa (Kinhwa, Iwu, Pukiang, Tungyang, Yungkang, Wuyi, Tangid, and Lance))
| Territory Lost | Prefecture Apostolic of Lishui [Lishui], China
| Territory Added |
9 Jul | Vicariate Apostolic of Orange River, South Africa
| Name Changed | Vicariate Apostolic of Keimoes, South Africa
| Name Changed |
9 Jul | Diocese of Chittagong, Bangladesh (Aralcan in Burma (Akyab, Paletto, Eyankpyu, and Sandoway))
| Territory Lost | Prefecture Apostolic of Akyab, Myanmar
| Erected |
13 Jul | Diocese of Corumbá, Mato Grosso do Sul, Brazil
Archdiocese of Cuiabá, Mato Grosso, Brazil
Territorial Prelature of Registro do Araguaia, Brazil
| Territory Lost | Territorial Prelature of Chapada, Brazil
| Erected |
1 Aug | Vicariate Apostolic of Yükiang [Yujiang], China (Tzeki)
| Territory Lost | Vicariate Apostolic of Nancheng [Nancheng], China
| Territory Added |
4 Sep | Territorial Prelature of Mozambico (Zambézia (Beira, Tete, and Quelimane))
| Territory Lost | Diocese of Beira, Mozambique
| Erected |
4 Sep | Territorial Prelature of Mozambico (Niassa (Mocambique and Pòrto Amelia))
| Territory Lost | Diocese of Nampula, Mozambique
| Erected |
4 Sep | Territorial Prelature of Mozambico (Sui do Save (Lourenço Marques and Inhambane))
| Elevated | Archdiocese of Lourenço Marques, Mozambique
| Elevated |
4 Sep | Diocese of Macau, China (Island of Timor under the control of the Portuguese Republic)
| Territory Lost | Diocese of Díli, Timor-Leste
| Erected |
4 Sep | Prefecture Apostolic of Cubango in Angola (Benguela (Benguela and Huambo))
Mission "Sui Iuris" of Cunène, Angola (Huila (Mossâmedes and Huila))
| Territory Lost | Diocese of Nova Lisboa, Angola
| Erected |
4 Sep | Prefecture Apostolic of Cubango in Angola (Bié (Bié and Moxico) and Lunda (in Malanje))
| Territory Lost | Diocese of Silva Porto, Angola
| Erected |
4 Sep | Diocese of Angola e Congo (Luanda (Cabinda, Zaire, Gongo, Luanda, and Cuanza-North), Ciianza-Sul (in Benguela), and Malanje)
| Elevated | Archdiocese of Luanda, Angola
| Elevated |
4 Sep | Diocese of Santiago de Cabo Verde (Jesuit territory)
| Territory Lost | Mission "Sui Iuris" of Guinea Portoghese, Guinea-Bissau
| Erected |
4 Sep | Prefecture Apostolic of Cubango in Angola
| Suppressed |
4 Sep | Mission "Sui Iuris" of Cunène, Angola
| Suppressed |
4 Sep | Mission "Sui Iuris" of Lunda, Angola
| Suppressed |
4 Sep | Prefecture Apostolic of Lower Congo in Cubango, Angola
| Suppressed |
16 Nov | Diocese of Imola, Italy (S. Petronius in Castelbolognese)
| Territory Lost | Diocese of Faenza, Italy
| Territory Added |
16 Nov | Diocese of Faenza, Italy (Bianeanigo)
| Territory Lost | Diocese of Imola, Italy
| Territory Added |
17 Dec | | | Paulist Fathers
| Approbation |