Date | Country | Change |
| 1953 |  Peru | Diocese of Cajamarca lost territory to Apostolic Prefecture of San Francisco Javier |
| 1953 |  Spain | Metropolitan Archdiocese of Burgos lost territory to Diocese of Segovia |
| 1953 |  Syria,  Iraq | Mission sui juris of Syria and Cilicia was suppressed |
| 1953 |  Turkiye | Mission sui juris of Gazireh was suppressed |
| 1953.01.02 |  Venezuela | Diocese of Santo Tomás de Guayana was renamed as Diocese of Ciudad Bolívar |
| 1953.01.02 | Venezuela | Diocese of Zulia was renamed as Diocese of Maracaibo |
| 1953.01.12 |  Colombia | Metropolitan Archdiocese of Bogotá in Colombia was renamed as Metropolitan Archdiocese of Bogotá |
| 1953.01.12 | Spain | Metropolitan Archdiocese of Granada lost territory to Diocese of Almería |
| 1953.02.02 |  Zimbabwe | Apostolic Prefecture of Umtali was established (from Apostolic Vicariate of Fort Victoria and Apostolic Vicariate of Salisbury) |
| 1953.02.04 |  Norway | Apostolic Prefecture of Central Norway was promoted as Apostolic Vicariate of Central Norway |
| 1953.02.19 |  Bermuda | Apostolic Prefecture of Bermuda Islands was established (from Metropolitan Archdiocese of Halifax) |
| 1953.03.24 |  Cameroon | Apostolic Prefecture of Garoua was promoted as Apostolic Vicariate of Garoua |
| 1953.03.24 |  Congo-Kinshasa | Apostolic Vicariate of Kabinda was established (from Apostolic Vicariate of Luluabourg) |
| 1953.03.24 | Congo-Kinshasa | Apostolic Prefecture of Mweka was established (from Apostolic Vicariate of Luluabourg) |
| 1953.03.24 |  South Africa | Apostolic Prefecture of De Aar was established (from Diocese of Aliwal) |
| 1953.03.25 |  Kenya | Apostolic Vicariate of Kisumu was promoted as Diocese of Kisumu (became suffragan of Nairobi) |
| 1953.03.25 | Kenya | Metropolitan Archdiocese of Nairobi was established (from the suppressed Apostolic Vicariate of Zanzibar and with suffragan sees Kisumu and Nyeri) |
| 1953.03.25 | Kenya | Apostolic Vicariate of Nyeri was promoted as Diocese of Nyeri (became suffragan of Nairobi) |
| 1953.03.25 |  Tanzania | Apostolic Vicariate of Bubuka was promoted as Diocese of Bukoba (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Dar-es-Salaam was promoted as Metropolitan Archdiocese of Dar-es-Salaam (with suffragan sees Dodoma, Iringa, Mbulu, Morogoro and Moshi) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Dodoma was promoted as Diocese of Dodoma (became suffragan of Dar-es-Salaam) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Iringa was promoted as Diocese of Iringa (became suffragan of Dar-es-Salaam) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Karema was promoted as Diocese of Karema (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Kigoma was promoted as Diocese of Kigoma (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Maswa was promoted as Diocese of Maswa (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Mbeya was promoted as Diocese of Mbeya (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Mbulu was promoted as Diocese of Mbulu (became suffragan of Dar-es-Salaam) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Bagamoyo was promoted as Diocese of Morogoro (became suffragan of Dar-es-Salaam) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Kilima-Njaro was promoted as Diocese of Moshi (became suffragan of Dar-es-Salaam) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Mwanza was promoted as Diocese of Mwanza (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Lower Kagera was promoted as Diocese of Rutabo (became suffragan of Tabora) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Tabora was promoted as Metropolitan Archdiocese of Tabora (with suffragan sees Bukoba, Karema, Kigoma, Maswa, Mbeya, Mwanza and Rutabo) |
| 1953.03.25 | Tanzania | Apostolic Vicariate of Zanzibar was suppressed (to establish Metropolitan Archdiocese of Nairobi) |
| 1953.03.25 |  Uganda | Apostolic Vicariate of Gulu was promoted as Diocese of Gulu (became suffragan of Rubaga) |
| 1953.03.25 | Uganda | Apostolic Vicariate of Kampala was promoted as Diocese of Kampala (became suffragan of Rubaga) |
| 1953.03.25 | Uganda | Apostolic Vicariate of Masaka was promoted as Diocese of Masaka (lost territory to Metropolitan Archdiocese of Rubaga and became suffragan of Rubaga) |
| 1953.03.25 | Uganda | Apostolic Vicariate of Ruwenzori was promoted as Diocese of Mbarara (became suffragan of Rubaga) |
| 1953.03.25 | Uganda | Apostolic Vicariate of Uganda was promoted as Metropolitan Archdiocese of Rubaga (with suffragan sees Gulu, Kampala, Masaka, Mbarara and Tororo and gained territory from Apostolic Vicariate of Masaka) |
| 1953.03.25 | Uganda | Apostolic Vicariate of Tororo was promoted as Diocese of Tororo (became suffragan of Rubaga) |
| 1953.04.29 |  Denmark,  Faroe Islands,  Greenland | Apostolic Vicariate of Denmark was promoted as Diocese of København (without ecclesiastical province) |
| 1953.05.02 |  Mexico | Diocese of Tacámbaro lost territory to Diocese of Colima |
| 1953.05.07 | Kenya | Apostolic Prefecture of Meru was promoted as Diocese of Meru (became suffragan of Nairobi) |
| 1953.05.07 |  Myanmar | Apostolic Vicariate of Southern Burma was renamed as Apostolic Vicariate of Rangoon |
| 1953.05.07 |  Thailand | Apostolic Vicariate of Ubon was established (from Apostolic Vicariate of Thare) |
| 1953.05.07 | Thailand | Apostolic Prefecture of Udonthani was established (from Apostolic Vicariate of Thare) |
| 1953.05.07 | Venezuela | Apostolic Prefecture of Alto Orinoco was promoted as Apostolic Vicariate of Puerto Ayacucho |
| 1953.05.07 |  Zambia | Apostolic Prefecture of Fort Jameson was promoted as Apostolic Vicariate of Fort Jameson |
| 1953.06.04 |  Lebanon | Apostolic Vicariate of Beirut was restored (from Apostolic Vicariate of Aleppo) |
| 1953.06.29 | Congo-Kinshasa | Apostolic Vicariate of Inongo was established (from Apostolic Vicariate of Léopoldville) |
| 1953.06.29 | Kenya | Apostolic Prefecture of Eldoret was established (from Diocese of Kisumu) |
| 1953.06.29 |  Kuwait,  Bahrain,  Qatar,  Saudi Arabia | Apostolic Prefecture of Kuwait was established (from Apostolic Vicariate of Arabia) |
| 1953.06.29 |  Nigeria | Apostolic Prefecture of Jos was promoted as Diocese of Jos (lost territory to establish Apostolic Prefecture of Maiduguri and became suffragan of Lagos) |
| 1953.06.29 | Nigeria | Apostolic Prefecture of Kaduna was promoted as Diocese of Kaduna (lost territory to establish Apostolic Prefecture of Sokoto and became suffragan of Lagos) |
| 1953.06.29 | Nigeria | Apostolic Prefecture of Maiduguri was established (from Apostolic Prefecture of Jos) |
| 1953.06.29 | Nigeria | Apostolic Prefecture of Sokoto was established (from Apostolic Prefecture of Kaduna) |
| 1953.06.29 | Norway,  Bouvet Island | Apostolic Vicariate of Oslo was promoted as Diocese of Oslo (without ecclesiastical province) |
| 1953.06.29 |  Sweden | Apostolic Vicariate of Sweden was promoted as Diocese of Stockholm (without ecclesiastical province) |
| 1953.06.29 | Zimbabwe | Apostolic Prefecture of Wankie was established (from Apostolic Vicariate of Bulawayo and Apostolic Vicariate of Salisbury) |
| 1953.07.06 |  Canada | Diocese of Yarmouth was established (from Metropolitan Archdiocese of Halifax and became suffragan of Halifax) |
| 1953.08.06 |  USA | Diocese of Bridgeport was established (from Diocese of Hartford and became suffragan of Hartford) |
| 1953.08.06 | USA | Diocese of Hartford was promoted as Metropolitan Archdiocese of Hartford (with suffragan sees Bridgeport, Norwich and Providence and lost territory to establish Diocese of Bridgeport and Diocese of Norwich) |
| 1953.08.06 | USA | Diocese of Norwich was established (from Diocese of Hartford and became suffragan of Hartford) |
| 1953.08.07 |  India | Metropolitan Archdiocese of Pondicherry was renamed as Metropolitan Archdiocese of Pondicherry and Cuddalore |
| 1953.09.19 | India | Diocese of Bangalore was promoted as Metropolitan Archdiocese of Bangalore (with suffragan sees Belgaum, Bellary, Mangalore and Mysore) |
| 1953.09.19 | India | Diocese of Belgaum was established (from Metropolitan Archdiocese of Goa and Daman and Diocese of Poona and became suffragan of Bangalore) |
| 1953.09.19 | India | Diocese of Hyderabad was promoted as Metropolitan Archdiocese of Hyderabad (with suffragan sees Guntur, Nellore, Vijayawada, Visakhapatnam and Warangal) |
| 1953.09.19 | India | Diocese of Madurai was promoted as Metropolitan Archdiocese of Madurai (with suffragan sees Kottar, Tiruchirapalli and Tuticorin) |
| 1953.09.19 | India | Diocese of Nagpur was promoted as Metropolitan Archdiocese of Nagpur (with suffragan see Jabalpur) |
| 1953.09.19 | India | Diocese of Ranchi was promoted as Metropolitan Archdiocese of Ranchi (with suffragan sees Cuttack, Patna and Sambalpur) |
| 1953.09.19 |  Malaysia | Diocese of Malacca was promoted as Archdiocese of Malacca (without ecclesiastical province) |
| 1953.09.25 |  Dominican Republic | Diocese of La Vega was restored (from Metropolitan Archdiocese of Santo Domingo and became suffragan of Santo Domingo) |
| 1953.09.25 | Dominican Republic | Territorial Prelature of San Juan de la Maguana was established (from Metropolitan Archdiocese of Santo Domingo and became suffragan of Santo Domingo) |
| 1953.09.25 | Dominican Republic | Diocese of Santiago de los Caballeros was established (from Metropolitan Archdiocese of Santo Domingo and became suffragan of Santo Domingo) |
| 1953.10.20 | India | Metropolitan Archdiocese of Goa and Daman lost territory to Diocese of Poona |
| 1953.10.20 | USA | Diocese of Dallas was renamed as Diocese of Dallas–Fort Worth |
| 1953.10.22 | Spain | Diocese of Huelva was established (from Metropolitan Archdiocese of Sevilla and became suffragan of Sevilla) |
| 1953.10.28 |  Philippines | Territorial Prelature of Cotabato and Sulu was renamed as Territorial Prelature of Cotabato (lost territory to establish Apostolic Prefecture of Sulu) |
| 1953.10.28 | Philippines | Apostolic Prefecture of Sulu was established (from Territorial Prelature of Cotabato and Sulu) |
| 1953.11.16 |  Ecuador | Apostolic Prefecture of Aguarico was established (from Apostolic Vicariate of Napo) |
| 1953.11.21 |  England,  Scotland,  Wales | Military Vicariate of Great Britain was established |
| 1953.12.31 | India | Diocese of Tellicherry (Syro-Malabar Rite) was established (from Diocese of Calicut and became suffragan of Ernakulam) |
