| Date | Country | Change |
| 1941 | Titular Episcopal See of Rusadus was renamed as Titular Episcopal See of Rusadus | |
| 1941 | Titular Episcopal See of Cardicium was renamed as Titular Episcopal See of Cardicium | |
| 1941 | Titular Episcopal See of Amathus in Palæstina was renamed as Titular Episcopal See of Amathus in Palæstina | |
| 1941 | Titular Archiepiscopal See of Arca in Armenia (Maronite Rite) was suppressed | |
| 1941 | Titular Episcopal See of Daphnusia was renamed as Titular Episcopal See of Daphnusia | |
| 1941 | Titular Episcopal See of Hemeria was renamed as Titular Episcopal See of Hemeria | |
| 1941 | Titular Episcopal See of Sauatra was renamed as Titular Episcopal See of Sauatra | |
| 1941 | Titular Episcopal See of Torone was suppressed | |
| 1941.01.15 | Apostolic Prefecture of Bahama was promoted as Apostolic Vicariate of Bahama Islands | |
| 1941.01.25 | Apostolic Vicariate of Hawaiian Islands was promoted as Diocese of Honolulu (became suffragan of San Francisco) | |
| 1941.02 | Apostolic Administration of Łemkowszczyzna (Ukrainian Rite) was promoted as Apostolic Exarchate of Łemkowszczyzna | |
| 1941.04.03 | Apostolic Prefecture of Rajaburi was promoted as Apostolic Vicariate of Rajaburi | |
| 1941.05.10 | Diocese of Amargosa was established (from Metropolitan Archdiocese of São Salvador da Bahia and became suffragan of São Salvador da Bahia) | |
| 1941.07.03 | Diocese of Antioquía–Jericó was renamed as Diocese of Antioquía (lost territory to establish Diocese of Jericó) | |
| 1941.07.03 | Diocese of Jericó was restored (from Diocese of Antioquía–Jericó and became suffragan of Medellín) | |
| 1941.07.03 | Apostolic Prefecture of Urabá was suppressed | |
| 1941.07.08 | Apostolic Vicariate of Cooktown was promoted as Diocese of Cairns | |
| 1941.10.16 | Apostolic Prefecture of Bandung was promoted as Apostolic Vicariate of Bandung | |
| 1941.10.16 | Apostolic Prefecture of Purwokerto was promoted as Apostolic Vicariate of Purwokerto | |
| 1941.10.16 | Apostolic Prefecture of Surabaia was promoted as Apostolic Vicariate of Surabaia | |
| 1941.10.25 | Diocese of Piana dei Greci (Italo-Albanese Rite) was renamed as Diocese of Piana degli Albanesi | |
| 1941.11.08 | Diocese of Tagbilaran was established (from Metropolitan Archdiocese of Cebu and became suffragan of Cebu) | |
| 1941.11.15 | Diocese of Denver was promoted as Metropolitan Archdiocese of Denver (with suffragan sees Cheyenne and Pueblo and lost territory to establish Diocese of Pueblo) | |
| 1941.11.15 | Diocese of Pueblo was established (from Diocese of Denver and became suffragan of Denver) | |
| 1941.12.20 | Diocese of Oliveira was established (from Metropolitan Archdiocese of Belo Horizonte and became suffragan of Belo Horizonte) | |
| 1941.12.23 | Apostolic Vicariate of Padang was renamed as Apostolic Vicariate of Medan |
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