Kim Doochul is a South Korean theoretical physicist. He was head of the Department of Physics, director of the BK21 Physics Research Division, and professor emeritus at Seoul National University. He was also a fellow and chairperson in the Korean Academy of Science and Technology before becoming the fifth president of Korea Institute for Advanced Study and the second president of Institute for Basic Science. He was a standing trustee with the Asia Pacific Center for Theoretical Physics and a board of Trustee member of the Korean Physical Society.