Changes in Ecclesiastical Jurisdictions in Sri Lanka

Date	Change
1834.12.03	Apostolic Vicariate of Ceylon was established (from Diocese of Cochin)
1845.02.17	Apostolic Vicariate of Ceylon was renamed as Apostolic Vicariate of Colombo (lost territory to establish Apostolic Vicariate of Jaffna)
1845.02.17	Apostolic Vicariate of Jaffna was established (from Apostolic Vicariate of Ceylon)
1883.04.20	Apostolic Vicariate of Kandy was established (from Apostolic Vicariate of Colombo)
1886.09.01	Apostolic Vicariate of Colombo was promoted as Archdiocese of Colombo
1886.09.01	Apostolic Vicariate of Jaffna was promoted as Diocese of Jaffna
1886.09.01	Apostolic Vicariate of Kandy was promoted as Diocese of Kandy
1887.06.07	Archdiocese of Colombo was promoted as Metropolitan Archdiocese of Colombo (with suffragan sees Jaffna and Kandy)
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)
1939.01.05	Diocese of Chilaw was established (from Metropolitan Archdiocese of Colombo and became suffragan of Colombo)
1944.12.06	Metropolitan Archdiocese of Colombo was renamed as Metropolitan Archdiocese of Colombo in Ceylon
1954.06.14	Diocese of Kandy lost territory to Diocese of Trincomalee
1967.10.23	Diocese of Trincomalee was renamed as Diocese of Trincomalee–Batticaloa
1972.05.22	Metropolitan Archdiocese of Colombo in Ceylon was renamed as Metropolitan Archdiocese of Colombo
1972.12.18	Diocese of Badulla was established (from Diocese of Kandy and became suffragan of Colombo)
1975.12.19	Apostolic Prefecture of Anuradhapura was established (from Diocese of Jaffna and Diocese of Trincomalee–Batticaloa and became suffragan of Colombo)
1981.01.24	Diocese of Mannar was established (from Diocese of Jaffna and became suffragan of Colombo)
1982.03.18	Apostolic Prefecture of Anuradhapura was promoted as Diocese of Anuradhapura
1987.05.15	Diocese of Kurunegala was established (from Diocese of Chilaw and became suffragan of Colombo)
1995.11.02	Diocese of Ratnapura was established (from Diocese of Galle and became suffragan of Colombo)
2012.07.03	Diocese of Batticaloa was established (from Diocese of Trincomalee–Batticaloa and became suffragan of Colombo)
2012.07.03	Diocese of Trincomalee–Batticaloa was renamed as Diocese of Trincomalee (lost territory to establish Diocese of Batticaloa)