Date | Country | Change |
| 1932.06.11 |  India | Diocese of Tiruvalla (Syro-Malankara Rite) was established (became suffragan of Trivandrum) |
| 1932.06.11 | India | Metropolitanate sui juris of Trivandrum (Syro-Malankara Rite) was established (with suffragan see Tiruvalla) |
| 1977 | India | Titular Episcopal See of Chayal (Syro-Malankara Rite) was established |
| 1978.10.28 | India | Diocese of Bathery (Syro-Malankara Rite) was established (from Diocese of Tiruvalla and became suffragan of Trivandrum) |
| 1996.12.16 | India | Diocese of Marthandam (Syro-Malankara Rite) was established (from Metropolitanate sui juris of Trivandrum and became suffragan of Trivandrum) |
| 2002.12.19 | India | Diocese of Moovatupuzha (Syro-Malankara Rite) was established (from Diocese of Tiruvalla and became suffragan of Trivandrum) |
| 2005.02.10 | India | Metropolitanate sui juris of Trivandrum (Syro-Malankara Rite) was promoted as Major Archdiocese of Trivandrum |
| 2006.05.15 | India | Diocese of Tiruvalla (Syro-Malankara Rite) was promoted as Metropolitan Archdiocese of Tiruvalla (with suffragan sees Bathery and Moovatupuzha) |
| 2007.01.02 | India | Diocese of Mavelikkara (Syro-Malankara Rite) was established (from Major Archdiocese of Trivandrum and became suffragan of Trivandrum) |
| 2010.01.25 | India | Diocese of Pathanamthitta (Syro-Malankara Rite) was established (from Major 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) |
| 2010.07.14 |  USA,  Canada | Apostolic Exarchate of United States of America (Syro-Malankara Rite) was established |
| 2015.03.26 | India | Apostolic Exarchate of Saint Ephrem of Khadki (Syro-Malankara Rite) was established (without ecclesiastical province) |
| 2015.03.26 | India | Diocese of Saint John Chrysostom of Gurgaon (Syro-Malankara Rite) was established (without ecclesiastical province) |
| 2015.12.22 | USA, Canada | Apostolic Exarchate of United States of America (Syro-Malankara Rite) was promoted as Diocese of Saint Mary, Queen of Peace, of the United States of America and Canada (gained territory of Canada and without ecclesiastical province) |
| 2017.08.05 | India | Diocese of Parassala (Syro-Malankara Rite) was established (from Major Archdiocese of Trivandrum and became suffragan of Trivandrum) |
| 2019.11.23 | India | Apostolic Exarchate of Saint Ephrem of Khadki (Syro-Malankara Rite) was promoted as Diocese of Saint Ephrem of Khadki (became suffragan of Trivandrum) |
