 | 1923 | 1924 | 1925 |  |
Date | Country | Change |
| 1924 |  Bosnia and Herzegovina | Apostolic Administration of Bosna i Hercegovina (Ruthenian Rite) was suppressed (to Diocese of Križevci) |
| 1924 |  Bulgaria | Titular Episcopal See of Abryus was renamed as Titular Episcopal See of Abrytus |
| 1924 |  Egypt | Titular Episcopal See of Aprhodytopolis was renamed as Titular Episcopal See of Aphrodytopolis |
| 1924 |  Greece | Titular Archiepiscopal See of Pharsalus was demoted as Titular Episcopal See of Pharsalus |
| 1924 |  Israel | Titular Episcopal See of Hippus was renamed as Titular Episcopal See of Hippus |
| 1924 |  Mongolia | Mission sui juris of Outer Mongolia 外蒙 was renamed as Mission sui juris of Urga 庫倫 |
| 1924 |  São Tomé and Príncipe | Diocese of Tomé was renamed as Diocese of São Tomé |
| 1924 |  Serbia | Titular Episcopal See of Beograd was renamed as Titular Episcopal See of Belgrado e Semendria |
| 1924 |  Tunisia | Titular Episcopal See of Agæ was renamed as Titular Episcopal See of Agæ |
| 1924 | Tunisia | Titular Episcopal See of Bulla Regia was renamed as Titular Episcopal See of Bulla Regia |
| 1924 | Tunisia | Titular Archiepiscopal See of Carie Portus was renamed as Titular Archiepiscopal See of Caria |
| 1924 | Tunisia | Titular Episcopal See of Hadrumetum was renamed as Titular Episcopal See of Hadrumetum |
| 1924 | Tunisia | Titular Episcopal See of Hirina was renamed as Titular Episcopal See of Hirina |
| 1924 |  Turkiye | Titular Episcopal See of Adramyttium was renamed as Titular Episcopal See of Adramyttium |
| 1924 | Turkiye | Titular Episcopal See of Adrassus was renamed as Titular Episcopal See of Adrassus |
| 1924 | Turkiye | Titular Episcopal See of Bathna (Syriac Rite) was renamed as Titular Episcopal See of Batna |
| 1924 | Turkiye | Titular Episcopal See of Camuliana was renamed as Titular Episcopal See of Camuliana |
| 1924 | Turkiye | Titular Episcopal See of Dansara was renamed as Titular Episcopal See of Dausara |
| 1924 | Turkiye | Titular Episcopal See of Germia s. Germocolonia was renamed as Titular Episcopal See of Germia s. Germocolonia |
| 1924 | Turkiye | Titular Episcopal See of Iassus was renamed as Titular Episcopal See of Iassus |
| 1924 | Turkiye | Titular Episcopal See of Paralais was renamed as Titular Episcopal See of Paralais |
| 1924 | Turkiye | Titular Archiepiscopal See of Theodosiopolis ante Apri (Bulgarian Rite) was suppressed |
| 1924.01.31 |  China | Apostolic Prefecture of Jiangmen 江門 was established (from Apostolic Vicariate of Shantou 汕頭) |
| 1924.02.01 |  Brazil | Diocese of Belo Horizonte was promoted as Metropolitan Archdiocese of Belo Horizonte (with suffragan sees Aterrado and Uberaba) |
| 1924.02.01 | Brazil | Diocese of Juiz de Fora was established (from Metropolitan Archdiocese of Mariana and became suffragan of Mariana) |
| 1924.02.11 |  Congo-Kinshasa | Apostolic Prefecture of Tsuapa was established (from Apostolic Vicariate of Nouvelle-Anvers) |
| 1924.04.15 | China | Apostolic Prefecture of Lixian 蠡縣 was established (from Apostolic Vicariate of Central Chi-Li 直隸中境 and Apostolic Vicariate of Southwestern Chi-Li 直隸西南) |
| 1924.04.15 | Congo-Kinshasa | Apostolic Prefecture of Uélé Occidentale was promoted as Apostolic Vicariate of Uélé Occidentale |
| 1924.04.16 |  Ecuador | Apostolic Prefecture of San Miguel de Sucumbíos was established (from Apostolic Vicariate of Napo) |
| 1924.05.06 | Congo-Kinshasa | Apostolic Prefecture of Uélé Orientale was promoted as Apostolic Vicariate of Uélé Orientale |
| 1924.05.08 |  USA | Apostolic Exarchate of United States of America (Ruthenian Rite) was established (from Ordinariate of United States of America) |
| 1924.05.08 | USA | Ordinariate of United States of America (Ukrainian Rite) was promoted as Apostolic Exarchate of United States of America (lost territory to establish Apostolic Exarchate of United States of America) |
| 1924.06.04 |  Hungary | Apostolic Exarchate of Miskolc (Hungarian Rite) was established |
| 1924.06.12 |  Colombia | Apostolic Prefecture of Sinú was established (from Metropolitan Archdiocese of Cartagena) |
| 1924.07.04 | Brazil | Territorial Prelature of Bananal was established (from Diocese of Porto Nacional and became suffragan of Mariana) |
| 1924.07.04 | Brazil | Diocese of Santos was established (from Metropolitan Archdiocese of São Paulo, Diocese of Botucatu and Diocese of Taubaté and became suffragan of São Paulo) |
| 1924.07.04 | Brazil | Diocese of Sorocaba was established (from Metropolitan Archdiocese of São Paulo, Diocese of Botucatu and Diocese of Taubaté and became suffragan of São Paulo) |
| 1924.07.25 | Brazil | Territorial Prelature of São José de Alto Tocantins was established (from Diocese of Goiás and became suffragan of Mariana) |
| 1924.09.25 |  Chile | Mission sui juris of Valdivia was promoted as Apostolic Administration of Valdivia |
| 1924.10.17 |  Switzerland | Diocese of Lausanne et Genève was renamed as Diocese of Lausanne, Genève et Fribourg |
| 1924.10.29 |  North Macedonia | Metropolitan Archdiocese of Skopje was demoted as Diocese of Skopje (without ecclesiastical province) |
| 1924.10.29 | Serbia | Diocese of Beograd was promoted as Archdiocese of Beograd |
| 1924.11.01 |  Estonia | Apostolic Administration of Estonia was established (from Archdiocese of Riga) |
| 1924.11.11 |  Bolivia | Diocese of Oruro was established (from Metropolitan Archdiocese of La Plata and became suffragan of Sucre) |
| 1924.11.11 | Bolivia | Diocese of Potosí was established (from Metropolitan Archdiocese of La Plata and became suffragan of Sucre) |
| 1924.11.11 | Bolivia | Metropolitan Archdiocese of La Plata was renamed as Metropolitan Archdiocese of Sucre (lost territory to establish Diocese of Oruro, Diocese of Potosí and Diocese of Tarija and gained suffragan sees Oruro, Potosí and Tarija) |
| 1924.11.11 | Bolivia | Diocese of Tarija was established (from Metropolitan Archdiocese of La Plata and became suffragan of Sucre) |
| 1924.11.15 |  Canada | Diocese of Saint John in America was renamed as Diocese of Saint John, New Brunswick |
| 1924.11.21 |  Dominica | Diocese of Roseau lost territory to Diocese of San Juan de Puerto Rico |
| 1924.11.21 |  Puerto Rico | Diocese of Ponce was established (from Diocese of Puerto Rico and without ecclesiastical province) |
| 1924.11.21 | Puerto Rico | Diocese of Puerto Rico was renamed as Diocese of San Juan de Puerto Rico (gained territory from Diocese of Roseau and lost territory to establish Diocese of Ponce) |
| 1924.11.22 |  England | Diocese of Lancaster was established (from Metropolitan Archdiocese of Liverpool and Diocese of Hexham and Newcastle and became suffragan of Liverpool) |
| 1924.11.22 |  Mexico | Metropolitan Archdiocese of Michoacán was renamed as Metropolitan Archdiocese of Morelia |
| 1924.12.03 |  Cambodia | Apostolic Vicariate of Cambodia was renamed as Apostolic Vicariate of Phnom Penh |
| 1924.12.03 | China | Apostolic Vicariate of Central Chi-Li 直隸中境 was renamed as Apostolic Vicariate of Baodingfu 保定府 |
| 1924.12.03 | China | Apostolic Vicariate of Western Guangdong and Hainan 粵西海南 was renamed as Apostolic Vicariate of Beihai 北海 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Chi-Li 直隸北境 was renamed as Apostolic Vicariate of Beijing 北京 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Hunan 湖南北境 was renamed as Apostolic Vicariate of Changde 常德 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Hunan 湖南南境 was renamed as Apostolic Vicariate of Changsha 長沙 |
| 1924.12.03 | China | Apostolic Vicariate of Northwestern Szechwan 四川西北 was renamed as Apostolic Vicariate of Chengdu 成都 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Szechwan 四川東境 was renamed as Apostolic Vicariate of Chongqing 重慶 |
| 1924.12.03 | China | Apostolic Vicariate of Tibet 西藏 was renamed as Apostolic Vicariate of Dajianlu 打箭爐 |
| 1924.12.03 | China | Apostolic Vicariate of Guizhou 貴州 was renamed as Apostolic Vicariate of Guiyang 貴陽 |
| 1924.12.03 | China | Apostolic Vicariate of Western Chekiang 浙江西境 was renamed as Apostolic Vicariate of Hangzhou 杭州 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Shaanxi 陝西南境 was renamed as Apostolic Vicariate of Hanzhongfu 漢中府 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Manchuria 滿州北境 was renamed as Apostolic Vicariate of Jilin 吉林 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Shantung 山東北境 was renamed as Apostolic Vicariate of Jinanfu 濟南府 |
| 1924.12.03 | China | Apostolic Vicariate of Jing’an 晶安 was renamed as Apostolic Vicariate of Ji’anfu 吉安府 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Honan 河南東境 was renamed as Apostolic Vicariate of Kaifengfu 開封府 |
| 1924.12.03 | China | Apostolic Vicariate of Western Kansu 甘肅西境 was renamed as Apostolic Vicariate of Lanchowfu 蘭州府 |
| 1924.12.03 | China | Apostolic Vicariate of Northwestern Hupeh 湖北西北 was renamed as Apostolic Vicariate of Laohekou 老河口 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Shanxi 山西南境 was renamed as Apostolic Vicariate of Luanfu 潞安府 |
| 1924.12.03 | China | Apostolic Vicariate of Jiujiang 九江 was renamed as Apostolic Vicariate of Nanchang 南昌 |
| 1924.12.03 | China | Apostolic Vicariate of Guangxi 廣西 was renamed as Apostolic Vicariate of Nanning 南寧 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Honan 河南南境 was renamed as Apostolic Vicariate of Nanyangfu 南陽府 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Chekiang 浙江東境 was renamed as Apostolic Vicariate of Ningbo 寧波 |
| 1924.12.03 | China | Apostolic Vicariate of Jianchang 建昌 was renamed as Apostolic Vicariate of Ningyuanfu 寧遠府 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Kansu 甘肅東境 was renamed as Apostolic Vicariate of Qinzhou 秦州 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Mongolia 東蒙古 was renamed as Apostolic Vicariate of Rehe 熱河 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Manchuria 南滿 was renamed as Apostolic Vicariate of Shenyang 瀋陽 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Szechwan 四川南境 was renamed as Apostolic Vicariate of Suifu 敘府 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Shanxi 山西北境 was renamed as Apostolic Vicariate of Taiyuanfu 太原府 |
| 1924.12.03 | China | Apostolic Vicariate of Coastal Chi-Li 直隸海濱 was renamed as Apostolic Vicariate of Tianjin 天津 |
| 1924.12.03 | China | Apostolic Vicariate of Anhui 安徽 was renamed as Apostolic Vicariate of Wuhu 蕪湖 |
| 1924.12.03 | China | Apostolic Vicariate of Southeastern Chi-Li 直隸東南 was renamed as Apostolic Vicariate of Xianxian 獻縣 |
| 1924.12.03 | China | Apostolic Vicariate of Chahaer 察哈爾 was renamed as Apostolic Vicariate of Xiwanzi 西灣子 |
| 1924.12.03 | China | Apostolic Vicariate of Central Shaanxi 陝西中境 was renamed as Apostolic Vicariate of Xi’anfu 西安府 |
| 1924.12.03 | China | Apostolic Vicariate of Southern Shandong 山東南境 was renamed as Apostolic Vicariate of Yanzhoufu 兗州府 |
| 1924.12.03 | China | Apostolic Vicariate of Northern Shaanxi 陝西北境 was renamed as Apostolic Vicariate of Yan’anfu 延安府 |
| 1924.12.03 | China | Apostolic Vicariate of Southwestern Hupeh 湖北南境 was renamed as Apostolic Vicariate of Yichang 宜昌 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Chi-Li 直隸東境 was renamed as Apostolic Vicariate of Yongpingfu 永平府 |
| 1924.12.03 | China | Apostolic Vicariate of Southwestern Chi-Li 直隸西南 was renamed as Apostolic Vicariate of Zhengdingfu 正定府 |
| 1924.12.03 | China | Apostolic Vicariate of Western Honan 河南西境 was renamed as Apostolic Vicariate of Zhengzhou 鄭州 |
| 1924.12.03 | China | Apostolic Vicariate of Eastern Shandong 山東東境 was renamed as Apostolic Vicariate of Zhifou 芝罘 |
| 1924.12.03 |  Thailand | Apostolic Vicariate of Eastern Siam was renamed as Apostolic Vicariate of Bangkok |
| 1924.12.03 |  Vietnam | Apostolic Vicariate of Northern Tonking was renamed as Apostolic Vicariate of Bac Ninh |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Central Tonking was renamed as Apostolic Vicariate of Bùi Chu |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Eastern Tonking was renamed as Apostolic Vicariate of Hai Phòng |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Upper Tonking was renamed as Apostolic Vicariate of Hung Hoá |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Northern Cochin was renamed as Apostolic Vicariate of Huê |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Western Tonking was renamed as Apostolic Vicariate of Hà Nôi |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Coastal Tonking was renamed as Apostolic Vicariate of Phát Diêm |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Eastern Cochin was renamed as Apostolic Vicariate of Quinhon |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Western Cochin was renamed as Apostolic Vicariate of Saigon |
| 1924.12.03 | Vietnam | Apostolic Vicariate of Southern Tonking was renamed as Apostolic Vicariate of Vinh |
| 1924.12.08 | China | Apostolic Vicariate of Yunnan 雲南 was renamed as Apostolic Vicariate of Yunnanfu 雲南府 |
| 1924.12.12 | USA | Apostolic Vicariate of North Carolina was promoted as Diocese of Raleigh (became suffragan of Baltimore) |
| 1924.12.19 |  Nicaragua | Diocese of Matagalpa was established (from Metropolitan Archdiocese of Managua and became suffragan of Managua) |
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