 | 1913 | 1914 | 1915 |  |
Date | Country | Change |
| 1914 |  Australia | Metropolitan Archdiocese of Hobart was demoted as Archdiocese of Hobart (without ecclesiastical province) |
| 1914 |  Bosnia and Herzegovina | Apostolic Administration of Bosna i Hercegovina (Ruthenian Rite) was established (from Diocese of Križevci) |
| 1914 |  Syria | Titular Episcopal See of Arethusus was renamed as Titular Episcopal See of Arethusus |
| 1914 | Syria | Titular Episcopal See of Arethusa (Syriac Rite) was renamed as Titular Episcopal See of Arethusus |
| 1914 | Syria | Titular Archiepiscopal See of Laodicea (Greek-Melkite Rite) was suppressed |
| 1914 | Titular Episcopal See of Ostroh was established | |
| 1914.02.06 |  Brazil | Diocese of Cajazeiras was established (from Diocese of Paraíba and became suffragan of Paraíba) |
| 1914.02.06 | Brazil | Diocese of Paraíba was promoted as Metropolitan Archdiocese of Paraíba (with suffragan sees Cajazeiras and Natal and lost territory to establish Diocese of Cajazeiras) |
| 1914.02.09 |  Germany | Diocese of Augsburg lost territory to Metropolitan Archdiocese of München und Freising |
| 1914.03.03 |  USA | Diocese of El Paso was established (from Diocese of Dallas, Diocese of San Antonio and Diocese of Tucson and became suffragan of New Orleans) |
| 1914.03.04 |  Italy | Diocese of Ariano lost territory to Diocese of Lucera |
| 1914.03.16 |  Togo | Apostolic Prefecture of Togo was promoted as Apostolic Vicariate of Togo |
| 1914.04.02 | Brazil | Diocese of Uberaba lost territory to Diocese of Montes Claros |
| 1914.04.06 |  China | Apostolic Vicariate of Chaozhou 潮州 was established (from Apostolic Vicariate of Guangdong 廣東) |
| 1914.04.06 | China | Apostolic Vicariate of Guangdong 廣東 was renamed as Apostolic Vicariate of Guangzhou 廣州 (lost territory to establish Apostolic Vicariate of Chaozhou 潮州) |
| 1914.04.28 |  Cameroon | Apostolic Prefecture of Adamaua was established (from Apostolic Vicariate of Cameroun, Apostolic Vicariate of Khartoum and Apostolic Prefecture of Oubangui Chari) |
| 1914.04.28 |  Djibouti | Apostolic Prefecture of Djibouti was established (from Apostolic Vicariate of Galla) |
| 1914.05.05 | Italy | Diocese of Ostia–Velletri was renamed as Diocese of Ostia (lost territory to establish Diocese of Velletri) |
| 1914.05.05 | Italy | Diocese of Velletri was restored (from Diocese of Ostia–Velletri and became suffragan of Roma) |
| 1914.05.12 | Brazil | Territorial Prelature of Registro do Araguaia was established (from Metropolitan Archdiocese of Cuiabá and became suffragan of Cuiabá) |
| 1914.06.06 | China | Apostolic Prefecture of Guangxi 廣西 was promoted as Apostolic Vicariate of Guangxi 廣西 |
| 1914.07.20 |  Indonesia | Apostolic Vicariate of Batavia lost territory to Apostolic Prefecture of Lesser Sunda Islands |
| 1914.10.20 | Brazil | Diocese of Crato was established (from Diocese of Ceará and became suffragan of Olinda) |
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