Moon Jae-in (Korean pronunciation: [mundʑɛin]; born January 24, 1953) is a South Korean politician and the opposition leader of the New Politics Alliance for Democracy party. He was formerly a lawyer and the former chief of staff to late President Roh Moo-hyun. In the 19th legislative election on 11 April 2012, Moon won a seat in the Sasang District of Busan.