 | 2009 | 2010 | 2011 |  |
Date | Country | Change |
| 2010 |  Syria | Titular Episcopal See of Parembolæ in Phœnicia was renamed as Titular Episcopal See of Parembolæ in Arabia |
| 2010 | Syria | Titular Episcopal See of Saccæa was suppressed |
| 2010.01.15 |  India | Diocese of Mananthavady (Syro-Malabar Rite) lost territory to Diocese of Bhadravathi |
| 2010.01.18 | India | Diocese of Mandya (Syro-Malabar Rite) was established (from Diocese of Mananthavady and became suffragan of Tellicherry) |
| 2010.01.18 | India | Diocese of Ramanathapuram (Syro-Malabar Rite) was established (from Diocese of Palghat and became suffragan of Trichur) |
| 2010.01.19 |  Ghana | Apostolic Prefecture of Donkorkrom was promoted as Apostolic Vicariate of Donkorkrom |
| 2010.01.20 |  Ethiopia | Apostolic Vicariate of Hosanna was restored (from Apostolic Vicariate of Soddo–Hosanna) |
| 2010.01.20 | Ethiopia | Apostolic Vicariate of Soddo–Hosanna was renamed as Apostolic Vicariate of Soddo (lost territory to establish Apostolic Vicariate of Hosanna) |
| 2010.01.25 | India | Diocese of Pathanamthitta (Syro-Malankara Rite) was established (from Metropolitan Archdiocese of Trivandrum and became suffragan of Trivandrum) |
| 2010.01.25 | India | Diocese of Puthur (Syro-Malankara Rite) was established (from Diocese of Bathery and became suffragan of Tiruvalla) |
| 2010.01.30 |  Timor-Leste | Diocese of Maliana was established (from Diocese of Díli) |
| 2010.02.20 |  Chile | Territorial Prelature of Calama was promoted as Diocese of San Juan Bautista de Calama |
| 2010.02.26 |  Madagascar | Diocese of Toamasina was promoted as Metropolitan Archdiocese of Toamasina (with suffragan sees Ambatondrazaka, Fenoarivo Atsinanana and Moramanga) |
| 2010.04.29 |  Pakistan | Apostolic Prefecture of Quetta was promoted as Apostolic Vicariate of Quetta |
| 2010.05.01 |  Comoros,  Mayotte | Apostolic Administration of Comores was promoted as Apostolic Vicariate of Archipel des Comores |
| 2010.05.01 |  Philippines | Territorial Prelature of Ipil was promoted as Diocese of Ipil |
| 2010.05.22 |  Myanmar | Diocese of Kalay was established (from Diocese of Hakha and became suffragan of Mandalay) |
| 2010.05.22 |  Tunisia | Diocese of Tunis was promoted as Archdiocese of Tunis |
| 2010.05.31 |  Italy | Metropolitan Archdiocese of Pescara–Penne lost territory to Metropolitan Archdiocese of Chieti–Vasto |
| 2010.06.16 |  Brazil | Diocese of Salgueiro was established (from Diocese of Floresta and Diocese of Petrolina and became suffragan of Olinda e Recife) |
| 2010.07.14 |  USA,  Canada | Apostolic Exarchate of United States of America (Syro-Malankara Rite) was established |
| 2010.07.21 |  Malawi | Diocese of Karonga was established (from Diocese of Mzuzu and became suffragan of Blantyre) |
| 2010.11.27 |  Tanzania | Diocese of Bunda was established (from Metropolitan Archdiocese of Mwanza and Diocese of Musoma and became suffragan of Mwanza) |
| 2010.12.15 | Brazil | Diocese of Camaçari was established (from Metropolitan Archdiocese of São Salvador da Bahia and became suffragan of São Salvador da Bahia) |
| 2010.12.18 |  Costa Rica | Diocese of Tilarán was renamed as Diocese of Tilarán–Liberia |
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