List of Catholic dioceses in Korea

The Catholic Church of all Korea is united under a single episcopal conference for the entire politically divided peninsula. All territorial jurisdictions in Korea are part of the Latin Church, covering both South Korea and North Korea, comprising: three ecclesiastical provinces, each headed by a metropolitan bishop seated in an archdiocese, and a total of 14 suffragan dioceses the Military Ordinariate of South Korea.

Source: Wikipedia — List of Catholic dioceses in Korea (CC BY-SA 4.0)