The President of the State Affairs Commission of the Democratic People's Republic of Korea, alternatively styled "President of State Affairs" in official translations, is the supreme leader and head of state of North Korea. The president chairs the State Affairs Commission (SAC), which is the highest leadership institution in North Korea, and serves as the commander-in-chief of the North Korean armed forces.

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.