Changes in Ecclesiastical Jurisdictions in Japan

Date	Change
1588.02.19	Diocese of Funai 府内 was established (from Diocese of Macau 澳門 and became suffragan of Goa)
1660	Diocese of Funai 府内 was suppressed
1846.05.01	Apostolic Vicariate of Japan 日本 was established (from Apostolic Vicariate of Korea 조선)
1876.05.22	Apostolic Vicariate of Japan 日本 was suppressed (to establish Apostolic Vicariate of Northern Japan 日本北緯 and Apostolic Vicariate of Southern Japan 日本南緯)
1876.05.22	Apostolic Vicariate of Northern Japan 日本北緯 was established (from the suppressed Apostolic Vicariate of Japan 日本)
1876.05.22	Apostolic Vicariate of Southern Japan 日本南緯 was established (from the suppressed Apostolic Vicariate of Japan 日本)
1888.03.20	Apostolic Vicariate of Central Japan 日本中部 was established (from Apostolic Vicariate of Southern Japan 日本南緯)
1891.04.17	Apostolic Prefecture of Hakodate 函館 was established (from Apostolic Vicariate of Northern Japan 日本北緯)
1891.06.15	Apostolic Prefecture of Hakodate 函館 was promoted as Diocese of Hakodate 函館 (became suffragan of Tokyo 東京)
1891.06.15	Apostolic Vicariate of Southern Japan 日本南緯 was promoted as Diocese of Nagasaki 長崎 (became suffragan of Tokyo 東京)
1891.06.15	Apostolic Vicariate of Central Japan 日本中部 was promoted as Diocese of Osaka 大阪 (became suffragan of Tokyo 東京)
1891.06.15	Apostolic Vicariate of Northern Japan 日本北緯 was promoted as Metropolitan Archdiocese of Tokyo 東京 (with suffragan sees Hakodate 函館, Nagasaki 長崎 and Osaka 大阪)
1904.01.27	Apostolic Prefecture of Shikoku 四国 was established (from Diocese of Osaka 大阪 and became suffragan of Tokyo 東京)
1912.08.13	Apostolic Prefecture of Niigata 新潟 was established (from Metropolitan Archdiocese of Tokyo 東京, Diocese of Hakodate 函館 and Diocese of Osaka 大阪 and became suffragan of Tokyo 東京)
1915.02.12	Apostolic Prefecture of Sapporo 札幌 was established (from Diocese of Hakodate 函館 and became suffragan of Tokyo 東京)
1922.02.18	Apostolic Prefecture of Nagoya 名古屋 was established (from Metropolitan Archdiocese of Tokyo 東京 and Apostolic Prefecture of Niigata 新潟 and became suffragan of Tokyo 東京)
1923.05.04	Apostolic Vicariate of Hiroshima 広島 was established (from Diocese of Osaka 大阪 and became suffragan of Tokyo 東京)
1927.03.18	Apostolic Prefecture of Kagoshima 鹿児島 was established (from Diocese of Nagasaki 長崎 and became suffragan of Tokyo 東京)
1927.07.16	Diocese of Fukuoka 福岡 was established (from Diocese of Nagasaki 長崎 and became suffragan of Tokyo 東京)
1928.03.27	Mission sui juris of Miyazaki 宮崎 was restored (from Apostolic Prefecture of Kagoshima 鹿児島 and became suffragan of Tokyo 東京)
1929.03.30	Apostolic Prefecture of Sapporo 札幌 was promoted as Apostolic Vicariate of Sapporo 札幌
1935.01.28	Mission sui juris of Miyazaki 宮崎 was promoted as Apostolic Prefecture of Miyazaki 宮崎
1936.03.09	Diocese of Hakodate 函館 was renamed as Diocese of Sendai 仙台
1937.06.17	Apostolic Prefecture of Kyoto 京都 was established (from Diocese of Osaka 大阪 and became suffragan of Tokyo 東京)
1937.11.09	Diocese of Yokohama 横浜 was restored (from Metropolitan Archdiocese of Tokyo 東京 and became suffragan of Tokyo 東京)
1939.01.04	Apostolic Prefecture of Urawa 浦和 was established (from Diocese of Yokohama 横浜 and became suffragan of Tokyo 東京)
1947.01.13	Apostolic Administration of Okinawa and the Southern Islands 琉球列島 was established (from Apostolic Prefecture of Kagoshima 鹿児島 and became suffragan of Tokyo 東京)
1951.07.12	Apostolic Prefecture of Kyoto 京都 was promoted as Diocese of Kyoto 京都
1952.02.28	Apostolic Administration of Okinawa and the Southern Islands 琉球列島 lost territory to Apostolic Prefecture of Kagoshima 鹿児島
1952.12.11	Apostolic Vicariate of Sapporo 札幌 was promoted as Diocese of Sapporo 札幌 (gained territory from Diocese of Sendai 仙台)
1952.12.11	Diocese of Sendai 仙台 lost territory to Diocese of Sapporo 札幌
1955.02.25	Apostolic Prefecture of Kagoshima 鹿児島 was promoted as Diocese of Kagoshima 鹿児島
1957.12.16	Apostolic Prefecture of Urawa 浦和 was promoted as Diocese of Urawa 浦和
1959.05.04	Diocese of Nagasaki 長崎 was promoted as Metropolitan Archdiocese of Nagasaki 長崎 (with suffragan sees Fukuoka 福岡, Kagoshima 鹿児島, Miyazaki 宮崎 and Okinawa and the Southern Islands 琉球列島)
1959.06.30	Apostolic Vicariate of Hiroshima 広島 was promoted as Diocese of Hiroshima 広島
1961.12.22	Apostolic Prefecture of Miyazaki 宮崎 was promoted as Diocese of Oita 大分
1962.04.16	Apostolic Prefecture of Nagoya 名古屋 was promoted as Diocese of Nagoya 名古屋
1962.04.16	Apostolic Prefecture of Niigata 新潟 was promoted as Diocese of Niigata 新潟
1963.09.13	Apostolic Prefecture of Shikoku 四国 was promoted as Diocese of Takamatsu 高松
1969.06.24	Diocese of Osaka 大阪 was promoted as Metropolitan Archdiocese of Osaka 大阪 (with suffragan sees Hiroshima 広島, Kyoto 京都, Nagoya 名古屋 and Takamatsu 高松)
1972.12.18	Apostolic Administration of Okinawa and the Southern Islands 琉球列島 was promoted as Diocese of Naha 那覇
2003.03.31	Diocese of Urawa 浦和 was renamed as Diocese of Saitama さいたま
2012.06.15	Personal Ordinariate of Our Lady of the Southern Cross (Anglican Rite) was established
2023.08.15	Metropolitan Archdiocese of Osaka 大阪 was renamed as Metropolitan Archdiocese of Osaka–Takamatsu 大阪高松 (gained territory from the suppressed Diocese of Takamatsu 高松 and lost suffragan see Takamatsu 高松)
2023.08.15	Diocese of Takamatsu 高松 was suppressed (to Metropolitan Archdiocese of Osaka–Takamatsu 大阪高松)