| Date | Country | Change |
| 1893.01.03 | Apostolic Prefecture of British Honduras was promoted as Apostolic Vicariate of British Honduras | |
| 1893.02.17 | Apostolic Vicariate of Méndez y Gualaquiza was established (from Apostolic Vicariate of Napo) | |
| 1893.02.17 | Apostolic Vicariate of Zamora was established (from Apostolic Vicariate of Napo) | |
| 1893.05.19 | Metropolitan Archdiocese of Agra lost territory to Apostolic Prefecture of Bettiah | |
| 1893.06.15 | Diocese of Dubuque was promoted as Metropolitan Archdiocese of Dubuque (with suffragan sees Davenport, Lincoln and Omaha) | |
| 1893.07.17 | Apostolic Vicariate of Casanare was established (from Diocese of Tunja) | |
| 1893.08.25 | Diocese of Galle was established (from Metropolitan Archdiocese of Colombo and became suffragan of Colombo) | |
| 1893.08.25 | Diocese of Trincomalee was established (from Metropolitan Archdiocese of Colombo and Diocese of Jaffna and became suffragan of Colombo) | |
| 1893.08.25 | Apostolic Vicariate of Idaho was promoted as Diocese of Boise City (became suffragan of Oregon City) |
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