35°51′40″N 139°38′39″E / 35.8611°N 139.6442°E / 35.8611; 139.6442

Diocese of Saitama Dioecesis Saitamaensis カトリックさいたま教区
Location
Country	Japan
Territory	Saitama, Tochigi, Gunma, and Ibaraki
Ecclesiastical province	Tokyo
Metropolitan	Tokyo
Statistics
Area	22,604 km (8,727 sq mi)
Population - Total - Catholics	(as of 2020) 14,074,691 119,820 (0.9%)
Information
Rite	Latin Rite
Cathedral	Cathedral of St Theresa of the Child Jesus in Urawa, Saitama
Current leadership
Pope	Francis
Bishop	Mario Michiaki Yamanouchi
Metropolitan Archbishop	Tarcisio Isao Kikuchi
Bishops emeritus	Marcellino Taiji Tani Bishop Emeritus (2000-2013)
Map
Website
Website of the Diocese

The Roman Catholic Diocese of Saitama (Latin: Dioecesis Saitamaensis, Japanese: カトリックさいたま教区) is a Latin Church diocese of the Catholic Church located in the city of Saitama in the ecclesiastical province of Tokyo in Japan.

• January 4, 1939: Established as Apostolic Prefecture of Urawa from the Diocese of Yokohama
• December 16, 1957: Promoted as Diocese of Urawa
• March 31, 2003: Renamed as Diocese of Saitama
• June 2, 2018: Appointment of Rev. Don Mario Michiaki Yamanouchi, SDB

• Bishops of Saitama (Roman rite)
  • Bishop Mario Michiaki Yamanouchi, SDB (マリオ山野内倫) (2018.06.02 – present)
  • Bishop Marcellino Taiji Tani (マルセリーノ谷大二) (2000.05.10 -Resigned 2013.07.27)
• Bishops of Urawa (Roman rite)
  • Archbishop Peter Takeo Okada (ペトロ岡田武夫) (1991.04.15 – 2000.02.17)
  • Archbishop Francis Xavier Kaname Shimamoto (フランシスコ・ザビエル島本要), Ist. del Prado (1979.12.20 – 1990.02.08)
  • Bishop Laurentius Satoshi Nagae (ラウレンチオ長江 恵) (1957.12.24 – 1979.12.20)
• Prefects Apostolic of Urawa (Roman rite)
  • Fr. Paul Sakuzo Uchino (パウロ内野作蔵) (1945.12.13 – 1957)
  • Fr. Ambroise Leblanc (アンブローズ・ルブラン), OFM (1939 – 1940)

• Roman Catholicism in Japan

• GCatholic.org
• Catholic Hierarchy

• Diocese website
• http://www.cbcj.catholic.jp/jpn/diocese/saitama.htm