 | 1922 | 1923 | 1924 |  |
Date | Country | Change |
| 1923 |  Algeria | Titular Episcopal See of Bitha was renamed as Titular Episcopal See of Bitha |
| 1923 |  Denmark | Titular Episcopal See of Röskild was renamed as Titular Episcopal See of Roskilde |
| 1923 |  Tunisia | Titular Episcopal See of Pupiana was renamed as Titular Episcopal See of Papiana |
| 1923 |  Turkiye | Titular Episcopal See of Bathna (Syriac Rite) was renamed as Titular Episcopal See of Bathna |
| 1923 | Turkiye | Titular Episcopal See of Catenna was renamed as Titular Episcopal See of Catenna |
| 1923 | Turkiye | Titular Episcopal See of Colybranus was renamed as Titular Episcopal See of Colybrassus |
| 1923 | Turkiye | Titular Episcopal See of Hierapolis was renamed as Titular Episcopal See of Hieropolis |
| 1923 | Turkiye | Titular Episcopal See of Myriophytos was renamed as Titular Episcopal See of Myriophytos |
| 1923 | Turkiye | Titular Episcopal See of Petra was renamed as Titular Episcopal See of Petra |
| 1923 | Titular Episcopal See of Tænarum was renamed as Titular Episcopal See of Tenara | |
| 1923.02 |  Greece | Titular Episcopal See of Milos was suppressed (united to Diocese of Syros) |
| 1923.02.02 |  Russia | Diocese of Vladivostok was established (from Apostolic Vicariate of Siberia) |
| 1923.02.10 |  Serbia | Apostolic Administration of Jugoslavenska Banat was established (from Diocese of Csanád) |
| 1923.02.10 | Serbia | Apostolic Administration of Jugoslavenska Bačka was restored (from Metropolitan Archdiocese of Kalocsa) |
| 1923.02.17 |  Romania | Apostolic Administration of Timişoara was established (from Diocese of Csanád) |
| 1923.03.15 |  Ghana | Apostolic Vicariate of Lower Volta was established (from Apostolic Vicariate of Gold Coast and Apostolic Vicariate of Togo) |
| 1923.03.15 |  Madagascar | Apostolic Vicariate of Majunga was established (from Apostolic Vicariate of Diégo-Suarez) |
| 1923.04.19 |  Eswatini | Apostolic Prefecture of Swaziland was established (from Apostolic Vicariate of Natal) |
| 1923.05.01 |  Poland | Apostolic Administration of Tütz was established (from Metropolitan Archdiocese of Gniezno and Diocese of Chełmno) |
| 1923.05.04 |  Japan | Apostolic Vicariate of Hiroshima 広島 was established (from Diocese of Osaka 大阪 and became suffragan of Tokyo 東京) |
| 1923.05.04 |  Marshall Islands | Mission sui juris of Marshall Islands was suppressed (to Apostolic Vicariate of Mariana, Caroline, and Marshall Islands) |
| 1923.05.04 |  Micronesia,  Palau | Apostolic Vicariate of Mariana and Caroline Islands was renamed as Apostolic Vicariate of Mariana, Caroline, and Marshall Islands (gained territory from the suppressed Mission sui juris of Marshall Islands) |
| 1923.06.11 |  Cameroon | Apostolic Prefecture of Adamaua was renamed as Apostolic Prefecture of Foumban |
| 1923.06.11 |  Venezuela | Diocese of Mérida was promoted as Metropolitan Archdiocese of Mérida (with suffragan see San Cristóbal de Venezuela) |
| 1923.06.12 | Cameroon | Apostolic Prefecture of Buéa was established (from Apostolic Vicariate of Cameroun and Apostolic Prefecture of Foumban) |
| 1923.06.12 |  Iceland | Apostolic Prefecture of Islanda was established (from Apostolic Vicariate of Denmark) |
| 1923.06.12 |  India | Diocese of Calicut was established (from Diocese of Coimbatore, Diocese of Mangalore and Diocese of Mysore and became suffragan of Bombay) |
| 1923.06.12 | India | Diocese of Tuticorin was established (from Diocese of Trichinopoly and became suffragan of Bombay) |
| 1923.06.12 |  South Africa | Apostolic Prefecture of Gariep was established (from Apostolic Vicariate of Cape of Good Hope, Eastern District and gained territory from Apostolic Vicariate of Kimberley in South Africa) |
| 1923.06.12 | South Africa | Apostolic Vicariate of Kimberley in South Africa lost territory to Apostolic Prefecture of Gariep |
| 1923.06.12 | South Africa | Apostolic Prefecture of Lydenburg was established (from Apostolic Vicariate of Transvaal) |
| 1923.06.12 |  Uganda | Apostolic Prefecture of Equatorial Nile was established (from Apostolic Vicariate of Bahr el-Ghazal) |
| 1923.07.02 |  Morocco | Apostolic Vicariate of Rabat was established (from Apostolic Vicariate of Marruecos) |
| 1923.08.04 |  Italy | Diocese of Bobbio was renamed as Diocese of Bobbio–San Colombano (gained territory from the suppressed Abbacy nullius of San Colombano) |
| 1923.08.04 | Italy | Abbacy nullius of San Colombano was suppressed (to Diocese of Bobbio–San Colombano) |
| 1923.10.25 |  Latvia | Diocese of Riga was promoted as Archdiocese of Riga |
| 1923.10.26 |  USA | Diocese of Alton was suppressed (to establish Diocese of Springfield in Illinois) |
| 1923.10.26 | USA | Diocese of Springfield in Illinois was established (from the suppressed Diocese of Alton and became suffragan of Chicago) |
| 1923.11.13 | Italy | Metropolitan Archdiocese of Udine lost territory to Diocese of Concordia |
| 1923.11.26 | South Africa | Apostolic Prefecture of Kroonstad was established (from Apostolic Vicariate of Kimberley in South Africa) |
| 1923.11.30 |  Brazil | Diocese of Petrolina was established (from Diocese of Pesqueira and became suffragan of Olinda e Recife) |
| 1923.12.11 | South Africa | Apostolic Prefecture of Zululand was promoted as Apostolic Vicariate of Eshowe (gained territory from Apostolic Vicariate of Natal) |
| 1923.12.11 | South Africa | Apostolic Vicariate of Natal lost territory to Apostolic Vicariate of Eshowe |
| 1923.12.12 |  China | Apostolic Vicariate of Eastern Hupeh 湖北東境 was renamed as Apostolic Vicariate of Hankou 漢口 (lost territory to establish Apostolic Prefecture of Hanyang 漢陽, Apostolic Prefecture of Puqi 蒲圻 and Apostolic Prefecture of Wuchang 武昌) |
| 1923.12.12 | China | Apostolic Prefecture of Hanyang 漢陽 was established (from Apostolic Vicariate of Eastern Hupeh 湖北東境) |
| 1923.12.12 | China | Apostolic Prefecture of Puqi 蒲圻 was established (from Apostolic Vicariate of Eastern Hupeh 湖北東境) |
| 1923.12.12 | China | Apostolic Prefecture of Wuchang 武昌 was established (from Apostolic Vicariate of Eastern Hupeh 湖北東境) |
| 1923.12.21 | India | Apostolic Vicariate of Changanacherry (Syro-Malabar Rite) was promoted as Diocese of Changanacherry (became suffragan of Ernakulam) |
| 1923.12.21 | India | Apostolic Vicariate of Ernakulam (Syro-Malabar Rite) was promoted as Metropolitan Archdiocese of Ernakulam (with suffragan sees Changanacherry, Kottayam and Trichur) |
| 1923.12.21 | India | Apostolic Vicariate of Kottayam (Syro-Malabar Rite) was promoted as Diocese of Kottayam (became suffragan of Ernakulam) |
| 1923.12.21 | India | Apostolic Vicariate of Trichur (Syro-Malabar Rite) was promoted as Diocese of Trichur (became suffragan of Ernakulam) |
| 1923.12.27 | China | Apostolic Vicariate of Funingfu 福寧府 was established (from Apostolic Vicariate of Northern Fo-kien 福建北境) |
| 1923.12.27 | China | Apostolic Vicariate of Northern Fo-kien 福建北境 was renamed as Apostolic Vicariate of Fuzhou 福州 (lost territory to establish Apostolic Vicariate of Funingfu 福寧府 and Apostolic Prefecture of Tingzhou 汀州) |
| 1923.12.27 | China | Apostolic Prefecture of Tingzhou 汀州 was established (from Apostolic Vicariate of Northern Fo-kien 福建北境) |
| 1923.12.27 |  Indonesia | Apostolic Prefecture of Bangka dan Billiton was established (from Apostolic Prefecture of Sumatra) |
| 1923.12.27 | Indonesia | Apostolic Prefecture of Benkoelen was established (from Apostolic Prefecture of Sumatra) |
| 1923.12.27 | Indonesia | Apostolic Prefecture of Sumatra was renamed as Apostolic Prefecture of Padang (lost territory to establish Apostolic Prefecture of Bangka dan Billiton and Apostolic Prefecture of Benkoelen) |
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