 | 2005 | 2006 | 2007 |  |
Date | Country | Change |
| 2006.01.17 |  Colombia | Diocese of El Banco was established (from Diocese of Santa Marta and Diocese of Valledupar and became suffragan of Barranquilla) |
| 2006.01.28 |  India | Diocese of Jowai was established (from Metropolitan Archdiocese of Shillong and became suffragan of Shillong) |
| 2006.01.28 | India | Diocese of Nongstoin was established (from Metropolitan Archdiocese of Shillong and became suffragan of Shillong) |
| 2006.03.18 |  Kyrgyzstan | Mission sui juris of Kyrgyzstan was promoted as Apostolic Administration of Kyrgyzstan |
| 2006.03.23 | India | Diocese of Jashpur was established (from Diocese of Raigarh and became suffragan of Raipur) |
| 2006.04.07 |  Slovenia | Diocese of Celje was established (from Diocese of Maribor and became suffragan of Maribor) |
| 2006.04.07 | Slovenia | Diocese of Maribor was promoted as Metropolitan Archdiocese of Maribor (with suffragan sees Celje and Murska Sobota and lost territory to establish Diocese of Celje and Diocese of Murska Sobota) |
| 2006.04.07 | Slovenia | Diocese of Murska Sobota was established (from Diocese of Maribor and became suffragan of Maribor) |
| 2006.04.07 | Slovenia | Diocese of Novo Mesto was established (from Metropolitan Archdiocese of Ljubljana and became suffragan of Ljubljana) |
| 2006.05.13 |  Madagascar | Diocese of Moramanga was established (from Diocese of Ambatondrazaka and became suffragan of Antananarivo) |
| 2006.05.15 | India | Diocese of Tiruvalla (Syro-Malankara Rite) was promoted as Metropolitan Archdiocese of Tiruvalla (with suffragan sees Bathery and Moovatupuzha) |
| 2006.06.14 |  France | Diocese of Carcassonne was renamed as Diocese of Carcassonne et Narbonne |
| 2006.08.28 |  Myanmar | Diocese of Banmaw was established (from Diocese of Myitkyina and became suffragan of Mandalay) |
| 2006.09.20 |  Ukraine | Diocese of Sokal (Ukrainian Rite) was renamed as Diocese of Sokal–Zhovkva |
| 2006.10.14 |  Cote d’Ivoire | Diocese of Agboville was established (from Diocese of Yopougon and became suffragan of Abidjan) |
| 2006.10.17 |  Turkiye | Titular Episcopal See of Myra (Greek-Melkite Rite) was promoted as Titular Archiepiscopal See of Myra |
| 2006.10.21 |  Australia,  New Zealand | Diocese of Saint Thomas the Apostle of Sydney (Chaldean Rite) was established (without ecclesiastical province) |
| 2006.10.22 |  Angola | Diocese of Novo Redondo was renamed as Diocese of Sumbe |
| 2006.11.25 |  Burundi | Diocese of Bujumbura was promoted as Metropolitan Archdiocese of Bujumbura (with suffragan sees Bubanza and Bururi) |
| 2006.11.25 | India | Archdiocese of Goa and Daman was promoted as Metropolitan Archdiocese of Goa and Daman (with suffragan see Sindhudurg) |
| 2006.11.25 |  Mexico | Diocese of León was promoted as Metropolitan Archdiocese of León (with suffragan sees Celaya, Irapuato and Querétaro) |
| 2006.11.25 | Mexico | Diocese of Tijuana was promoted as Metropolitan Archdiocese of Tijuana (with suffragan sees La Paz and Mexicali) |
| 2006.11.25 | Mexico | Diocese of Tulancingo was promoted as Metropolitan Archdiocese of Tulancingo (with suffragan sees Huejutla and Tula) |
| 2006.11.25 | Mexico | Diocese of Tuxtla Gutiérrez was promoted as Metropolitan Archdiocese of Tuxtla Gutiérrez (with suffragan sees San Cristóbal de Las Casas and Tapachula) |
| 2006.12.06 |  Brazil | Diocese of São José dos Pinhais was established (from Metropolitan Archdiocese of Curitiba and became suffragan of Curitiba) |
| 2006.12.07 |  Germany | Metropolitan Archdiocese of Paderborn lost territory to Diocese of Essen |
| 2006.12.15 | France | Diocese of Grenoble was renamed as Diocese of Grenoble–Vienne |
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