Baik Jong-sub (born July 5, 1980) is an amateur boxer in the Lightweight division from South Korea.
Participated in the 2004 Olympic Games as a Lightweight boxer
Baik qualified for the Athens Games by winning the gold medal at the 2004 Asian Amateur Boxing Championships in Puerto Princesa, Philippines. In the final he defeated Pakistan's Asghar Ali Shah.
At the 2005 World Championships he beat three opponents including Selcuk Aydin but ran into eventual winner Yordenis Ugás in the quarterfinals and lost.