The Roman Catholic Diocese of Incheon () is a diocese of the Latin Church of the Catholic Church located in Incheon, South Korea. The diocese is suffragan to the Archdiocese of Seoul. History On 6 June 1961 Pope John XXIII erected as an Apostolic Vicariate of Incheon. It was elevated to a diocese the next year on 10 March. The seat is Dapdong Cathedral. Leadership Ordinaries Apostolic Vicars of Inch’on William John McNaughton, M.M. (1961–1962) Bishops of Incheon William John McNaughton, M.M. (1962–2002) Boniface Choi Ki-San (2002–2016) John Baptist Jung Shin-chul (2016–present) Coadjutor Bishops Boniface Choi Ki-San (1999–2002) Auxiliary Bishops John Baptist Jung Shin-chul (2010–2016) References Christian organizations established in 1961 Incheon Incheon Incheon Roman Catholic Ecclesiastical Province of Seoul