The Roman Catholic Diocese of Busan () is a diocese of the Latin Church of the Catholic Church located in Busan, South Korea. History On 21 January 1957 Pope Pius XII erected as an Apostolic Vicariate of Busan. It was elevated to a diocese by Pope John XXIII on 10 March 1962. Leadership Ordinaries Apostolic Vicars of Pusan John A. Choi Jae-seon (1957–1962) Bishops of Busan John A. Choi Jae-seon (1962–1973) Gabriel Lee Gab-sou (1975–1999) Augustine Cheong Myong-jo (1999–2007) Paul Hwang Chul-soo (2007–2018) Joseph Son Sam-seok (2019–present) Coadjutor Bishops Augustine Cheong Myong-jo (1998–1999) Auxiliary Bishops Gabriel Lee Gab-sou (1971–1975) Paul Hwang Chul-soo (2006–2007) Joseph Son Sam-seok (2010–2019) Pius Sin Hozol (2021–present) References External links Official site Busan Busan Christian organizations established in 1957 Busan Roman Catholic Ecclesiastical Province of Daegu