Lee Soo-sung (born March 10, 1939, South Hamgyong, Hamhung) is a South Korean politician and legal scholar.
He was the 27th Prime Minister of South Korea from December 18, 1995 to March 4, 1997.
Prior to becoming prime minister, he was president of Seoul National University.He later served as the executive vice chairman of the Advisory Council on Democratic and Peaceful Unification, the presidential advisory body on unification with North Korea.