The title of supreme leader of North Korea generally means the de facto top leader of the Workers' Party of Korea, the state and the Korean People's Army. Most of North Korea's leaders, who are called Supreme Leader, were not called this until after their death, going by other names like "Great Leader" and "Dear Leader" during their lifetimes. The leaders of North Korea also go by many other names and titles, see the lists of titles of Kim Il Sung, Kim Jong Il and Kim Jong Un.

The State Affairs Commission of the Democratic People's Republic of Korea (SAC) is constitutionally the supreme political authority of North Korea. The State Affairs Commission was created by 2016 amendments to the North Korean Constitution to replace the previously military-dominated National Defence Commission.