Moon Eui-jae (; born February 10, 1975) is a retired South Korean wrestler who won two Olympic silver medals in freestyle wrestling, Men's Freestyle 76 kg at the 2000 Summer Olympics and Men's Freestyle 84 kg in Athens in 2004. In Sydney, he lost his semi-final and won the bronze medal match, but was awarded the silver medal later after the disqualification of Alexander Leipold due to a drug infraction. He was also runner-up at the World Championships in 1998 and 2001, and was gold medalist at the 1998 and 2002 Asian Games.