Han Sung-joo

Han Sung-joo (; born September 13, 1940) is a Korean educator, diplomatist, diplomat, and politician. Han is a member of Cheongju Han clan.

He was born in Keijō (Seoul), Korea, Empire of Japan on September 13, 1940.

He is a foreign diplomat of South Korea, former foreign minister and ambassador to the United States, and a diplomat who has been a professor since 1978 in the Department of Political Science and Diplomacy at Korea University.

After graduating from Seoul National University in 1962, he received a master's degree in political science from the University of New Hampshire in 1964 and a doctorate in political science from the University of California, Berkeley, in 1970. From February 1993 to December 1994, he was Minister of Foreign Affairs. In 2006, he retired from Korea University professorship. From June 2002 to February 2003 and from March 2007 to January 2008, he served as President of Korea University. Secretary of Defense Donald H. Rumsfeld (right) meets in his Pentagon office with South Korean Ambassador to the United States Han Sung Joo (center) and Maj. Gen. Moon Young Han (left) on Oct. 1, 2004.

He was the Ambassador to the United States from April 2003 to February 2005.