Sung Hee-jun

{{short description|South Korean long jumper}}

Sung Hee-Jun (born 8 June 1974) is a retired South Korea long jumper.

He finished sixteenth at the 1995 Summer Universiade and fourth at the 1998 Asian Games.{{citation needed|date=March 2017}} He also competed at the 1992 World Junior Championships, the 1996 Olympic Games, the 1997 World Championships, the 1999 World Championships and the 2000 Olympic Games without reaching the final.{{World Athletics||name=Hee-jun Sung}}{{cite web|url=https://www.sports-reference.com/olympics/athletes/se/seong-hui-jun-1.html|archive-url=https://web.archive.org/web/20200417234243/https://www.sports-reference.com/olympics/athletes/se/seong-hui-jun-1.html|url-status=dead|archive-date=17 April 2020|title=Seong Hui-Jun|publisher=Sports-Reference.com|accessdate=20 March 2017}}

His personal best time was 8.01 metres, achieved in June 1998 in Chungju.