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The judiciary of South Korea is judicial branch of South Korean central government, established by Chapter 5 and 6 of the Constitution of South Korea.
These two chapters describe judiciary of South Korea into two groups by jurisdiction of matters. One is Constitutional Court which is highest court on adjudication of matters mainly on Constitutionality. Another is ordinary courts on matters except jurisdiction of Constitutional Court. These ordinary courts are shall have Supreme Court as their highest court.
Chief Justice of Supreme Court and President of Constitutional court are treated as two equivalent heads of judiciary branch in South Korea by article 15 of Constitutional Court Act. Though, since relationship between Supreme Court and Constitutional Court is not thoroughly defined anywhere in Constitution of South Korea and other related statutes, these two highest court of South Korea have been struggling about jurisdiction against each other for long years.