Lee Jung-su (Korean: ???; Korean pronunciation: [i.d???.su]; born November 30, 1989) is a South Korean short track speed skater.
He is a two-time Olympic Champion from 2010 Winter Olympics.
Lee won one distances and became second overall at the 2008 World Junior Championships in Bolzano.
He won 2009-2010 Overall World Cup.
At the 2010 Olympic Winter Games in Vancouver, Lee won two gold medal in the 1000m and 1500m events.