Lee Sang-don (born December 4, 1951) is a South Korean legal scholar and a conservative liberal political activist. His liberal philosophy was influenced by American conservatism and neoconservatism, but he is critical of South Korean conservatism. He currently works as a professor at Chung-Ang University. He is a conservative pundit well known for expressing criticisms towards the Lee Myung-bak government. He received criticisms from a group of pro-Lee Myung-bak lawmakers for participating in the restructure of the Saenuri Party (formally Grand National Party) in the past due to his distance with Lee Myung-bak.
He was a member of the National Assembly member of the People's Party, a liberal political party led by Ahn Cheol-soo.
Sang-don was born in Busan. He graduated in Seoul National University with a B.A. and M.A. in law and later received his PhD from Tulane University in law.
On April 4, 2012, Lee abruptly left a live political debate program shown in tvN Asia that generated controversies.