Date | Country | Change |
| 2013 |  Egypt,  South Sudan,  Sudan | Territory Dependent on the Patriarch of Egypt and Sudan (Greek-Melkite Rite) was renamed as Territory Dependent on the Patriarch of Egypt, Sudan and South Sudan |
| 2013 | Sudan, South Sudan | Territory Dependent on the Patriarch of Sudan (Syriac Rite) was renamed as Territory Dependent on the Patriarch of Sudan and South Sudan |
| 2013.01.18 |  England,  Scotland,  Wales | Apostolic Exarchate of Great Britain (Ukrainian Rite) was promoted as Diocese of Holy Family of London (without ecclesiastical province) |
| 2013.01.19 |  France,  Belgium,  Luxembourg,  Netherlands,  Switzerland | Apostolic Exarchate of France (Ukrainian Rite) was promoted as Diocese of Saint-Vladimir-le-Grand de Paris (without ecclesiastical province) |
| 2013.01.19 |  Serbia,  Kosovo | Apostolic Exarchate of Serbia and Montenegro (Croatian Rite) was renamed as Apostolic Exarchate of Serbia (lost territory to Archdiocese of Bar and Diocese of Kotor) |
| 2013.02.06 |  Brazil | Territorial Prelature of Cametá was promoted as Diocese of Cametá |
| 2013.02.21 |  Colombia | Apostolic Vicariate of Leticia lost territory to Apostolic Vicariate of Puerto Leguízamo–Solano |
| 2013.02.21 | Colombia | Apostolic Vicariate of Puerto Leguízamo–Solano was established (from Apostolic Vicariate of San Vicente–Puerto Leguízamo and gained territory from Apostolic Vicariate of Leticia) |
| 2013.02.21 | Colombia | Apostolic Vicariate of San Vicente–Puerto Leguízamo was renamed as Apostolic Vicariate of San Vicente (lost territory to establish Apostolic Vicariate of Puerto Leguízamo–Solano) |
| 2013.02.22 |  Congo-Brazzaville | Diocese of Gamboma was established (from Diocese of Owando and became suffragan of Brazzaville) |
| 2013.04.25 |  Guatemala | Metropolitan Archdiocese of Guatemala was renamed as Metropolitan Archdiocese of Santiago de Guatemala |
| 2013.05.24 | Congo-Brazzaville | Diocese of Dolisie was established (from Diocese of Nkayi and became suffragan of Brazzaville) |
| 2013.06.10 |  Iraq | Diocese of Amadiyah (Chaldean Rite) was renamed as Diocese of Amadiyah and Zaku (gained territory from the suppressed Diocese of Zaku) |
| 2013.06.10 | Iraq | Diocese of Zaku (Chaldean Rite) was suppressed (to Diocese of Amadiyah and Zaku) |
| 2013.07.11 | Iraq | Metropolitan Archdiocese of Kirkuk (Chaldean Rite) was renamed as Metropolitan Archdiocese of Kirkuk–Sulaimaniya (gained territory from the suppressed Diocese of Sulaimaniya and lost suffragan see Sulaimaniya) |
| 2013.07.11 | Iraq | Diocese of Sulaimaniya (Chaldean Rite) was suppressed (to Metropolitan Archdiocese of Kirkuk–Sulaimaniya) |
| 2013.10.09 | Brazil | Territorial Prelature of Coari was promoted as Diocese of Coari |
| 2013.11.26 | Colombia | Apostolic Vicariate of San Vicente was renamed as Apostolic Vicariate of San Vicente del Caguán |
| 2013.12.23 |  Australia,  New Zealand | Diocese of Saint Thomas the Apostle of Melbourne (Syro-Malabar Rite) was established (without ecclesiastical province) |
| 2013.12.28 |  India | Diocese of Sultanpet was established (from Diocese of Calicut and Diocese of Coimbatore and became suffragan of Verapoly) |
