The president of the Republic of Korea, also known as the president of South Korea (Korean: 대통령), is the head of state and head of government of the Republic of Korea. The president leads the State Council, and is the chief of the executive branch of the national government as well as the commander-in-chief of the Republic of Korea Armed Forces.

The First Republic of Korea was the government of South Korea from August 1948 to April 1960. The first republic was founded on 15 August 1948 after the transfer from the United States Army Military Government that governed South Korea since the end of Japanese rule in 1945, becoming the first independent republican government in Korea. Syngman Rhee became the first president of South Korea following the May 1948 general election, and the National Assembly in Seoul promulgated South Korea's first constitution in July, establishing a presidential system of government.