Lee Jae-myung (Korean: ???; Hanja: ???; born 22 December 1964) is a South Korean politician in the liberal Democratic Party of Korea.
He was Mayor of Seongnam since 2010 to 2018, and ran unsuccessfully for the National Assembly in 2008.
In 2016, he was named by interim party leader Kim Chong-in as a contender for the 2017 presidential election.
His approval rating for presidential candidacy is about 16 percent as of December 2016, being one of the "Big 3" potential candidates for 2017 presidential election.
Some of his notable achievements include Seongnam's social welfare program which is regarded as one of the most comprehensive social welfare programs in the nation for the city's elderly citizens and youth, and banning of dogmeat from Moran Market which has been the largest dogmeat market in South Korea since 1960.Born in Andong, Lee studied law at Chung-Ang University, and went on to work in that field before his entry into politics.