Lee Seok-hyun (Korean: 이석현; Hanja: 李錫玄; born 16 March 1951) is a South Korean politician used serving as the executive vice president of National Unification Advisory Council chaired by President Moon Jae-in from September 2021 to August 2022 previously served as Deputy Speaker of the National Assembly[1] and its six-term parliamentarian.

[3] After finishing his studies, he started working for insurance company not preparing for bar exam - a typical route for law graduates - to avoid taking governmental roles under totalitarian regime of Park Chung Hee.

[2] He then founded pro-democracy civil organisation with Moon Hee-sang funded by the eldest son of Kim Dae-jung in 1980.

He also took chairmanship of its special committees on reforming the National Pension Service twice in 2005 and 2011, State-owned enterprise in 2008 and Low birth rate-Aging society in 2008.

He is well known to the public for his chairing filibuster against controversial anti-terror bill at the plenary[9] - most notably when Cho Won-jin tried to interrupt Lee's party parliamentarian's speech.