Lee Hahn-koo (Korean: ???; Hanja: ???; born 12 December 1945) is a South Korean politician and leader of the Saenuri Party in the National Assembly.
A former economist, Lee was previously an economic adviser and chief of staff to Park Geun-hye, and in the 2012 parliamentary elections he campaigned on the slogan "Make Park Geun-hye the next president".
He studied at Seoul National University and completed a doctoral degree in economics at Kansas State University before serving the South Korean Ministry of Finance as a civil servant.
He is now serving his fourth term in the Assembly, having been elected as a proportional representation candidate in 2000 before becoming member for Suseong-gap in Daegu in 2004.