High Quality Content by WIKIPEDIA articles! The Presbyterian Church of Korea or PCK is a mainline Protestant denomination based in South Korea and currently has the second largest membership of any Presbyterian denomination in the world. It is affiliated with its daughter denomination, the Korean Presbyterian Church in America (KPCA) in the United States, which has adopted the "Korean Presbyterian Church Abroad" as its new name in 2009. The church, while primarily made up of Korean-speakers, welcomes people of all nationalities.