Diocese of Ubon Ratchathani

The Vicariate Apostolic of Ubon was created on May 7, 1953, when the Vicariate Apostolic of Thare was split. In 1965, the western part of the territory was separated and became the Vicariate Apostolic of Nakhon Ratchasima. On December 18, 1965, the Vicariate Apostolic was elevated to a diocese. ==Cathedral==

The cathedral of the diocese is the Cathedral of the Immaculate Conception, located in Ubon Ratchathani. ==Bishops==

• Claudius Philippe Bayet, M.E.P.: May 7, 1953 - August 13, 1969 (resigned) • Claude Germain Berthold, M.E.P.: April 9, 1970 - May 24, 1976 (resigned) • Michael Bunluen Mansap: May 21, 1976 - March 25, 2006 (retired) • Philip Banchong Chaiyara, C.Ss.R (March 25, 2006 – December 2, 2023) • Stephen Boonlert Phromsena (December 2, 2023 – present) ==References==