Changes in Ecclesiastical Jurisdictions in Malaysia

Date	Change
1558.02.04	Diocese of Malacca was established (from Diocese of Goa and became suffragan of Goa)
1838	Diocese of Malacca was suppressed (to Apostolic Vicariate of Ava and Pegu)
1841.09.10	Apostolic Vicariate of Western Siam was restored (from Apostolic Vicariate of Siam)
1855.09.04	Apostolic Prefecture of Labuan and Borneo was established (from Apostolic Vicariate of Batavia)
1886.06.28	Apostolic Vicariate of Western Siam lost territory to Diocese of Macau 澳門
1888.08.19	Apostolic Vicariate of Western Siam was promoted as Diocese of Malacca (became suffragan of Pondicherry)
1927.02.05	Apostolic Prefecture of Labuan and Borneo was renamed as Apostolic Prefecture of Northern Borneo (lost territory to establish Apostolic Prefecture of Sarawak)
1927.02.05	Apostolic Prefecture of Sarawak was established (from Apostolic Prefecture of Labuan and Borneo)
1952.02.14	Apostolic Prefecture of Northern Borneo was promoted as Apostolic Vicariate of Jesselton
1952.02.14	Apostolic Prefecture of Sarawak was promoted as Apostolic Vicariate of Kuching
1953.09.19	Diocese of Malacca was promoted as Archdiocese of Malacca (without ecclesiastical province)
1955.02.25	Diocese of Kuala Lumpur was established (from Archdiocese of Malacca and became suffragan of Malacca–Singapore)
1955.02.25	Archdiocese of Malacca was promoted as Metropolitan Archdiocese of Malacca–Singapore (with suffragan sees Kuala Lumpur and Penang and lost territory to establish Diocese of Kuala Lumpur and Diocese of Penang)
1955.02.25	Diocese of Penang was established (from Archdiocese of Malacca and became suffragan of Malacca–Singapore)
1959.12.19	Apostolic Vicariate of Miri was established (from Apostolic Vicariate of Kuching)
1968.03.22	Apostolic Vicariate of Jesselton was renamed as Apostolic Vicariate of Kota Kinabalu
1972.12.18	Diocese of Kuala Lumpur was promoted as Metropolitan Archdiocese of Kuala Lumpur (with suffragan sees Malacca–Johor and Penang)
1972.12.18	Metropolitan Archdiocese of Malacca–Singapore was demoted as Diocese of Malacca–Johor (lost territory to establish Archdiocese of Singapore and became suffragan of Kuala Lumpur)
1976.05.31	Apostolic Vicariate of Kota Kinabalu was promoted as Diocese of Kota Kinabalu (became suffragan of Kuching)
1976.05.31	Apostolic Vicariate of Kuching was promoted as Metropolitan Archdiocese of Kuching (with suffragan sees Kota Kinabalu and Miri)
1976.05.31	Apostolic Vicariate of Miri was promoted as Diocese of Miri (became suffragan of Kuching)
1985.05.27	Diocese of Malacca–Johor was renamed as Diocese of Melaka–Johor
1986.12.22	Diocese of Sibu was established (from Metropolitan Archdiocese of Kuching and became suffragan of Kuching)
1992.12.17	Diocese of Keningau was established (from Diocese of Kota Kinabalu and became suffragan of Kuching)
2007.07.16	Diocese of Sandakan was established (from Diocese of Kota Kinabalu and became suffragan of Kuching)
2008.05.23	Diocese of Kota Kinabalu was promoted as Metropolitan Archdiocese of Kota Kinabalu (with suffragan sees Keningau and Sandakan)