Ryanggang Province is a province in North Korea. The province is bordered by China on the north, North Hamgyong on the east, South Hamgyong on the south, and Chagang on the west. Ryanggang was formed in 1954, when it was separated from South Hamgyŏng. The provincial capital is Hyesan. In South Korean usage, "Ryanggang" is spelled and pronounced as "Yanggang"