Jang Sung-min (Korean: 장성민; Hanja: 張誠珉; born 5 September 1963) is a South Korean politician. He was formerly the president of the Grand National Unity Party.^[1]

Jang was born in Goheung County, South Jeolla Province. He started his political career under former president Kim Dae-jung. He was elected to the National Assembly as a member of the Millennium Democratic Party in 2000 but lost in 2002 due to his violation of election law.^[2]

In 2012, he became one of the hosts of the television show Jang Sung-min's Current Affairs Tank.^[3]

While he was working at Jang Sung-min's Current Affairs Tank, he was involved in controversies about reporting that the Gwangju Uprising was supported by North Korea.^[4] Although he denied it, the controversy was taken seriously.^[4]

He declared that he would run for the upcoming presidential election as a member of People's Party.^[3] He registered to enter for the party, however, the party rejected his bid.^[5] Because of that, he was forced to create a new party with the name of Grand National Unity Party.^{[citation needed]}

After GNUP was dissolved, in March 2018, he entered to Bareunmirae Party.^[6]