Hong Sung-Sik (born November 13, 1967, in Gochang, Jeollabuk-do) is a retired South Korean amateur boxer.
Hong won a bronze medal in the men's Lightweight (60 kg) category at the 1992 Summer Olympics in Barcelona. He defeated future WBO lightweight champion Artur Grigorian 9–3 in Round of 16, but was edged out 11–10 by Oscar De La Hoya in the semifinal bout.
Hong retired from boxing after winning gold at the 1993 East Asian Games. He is currently serving as a junior high school physical education teacher in Gochang, Jeollabuk-do.
1990 Boxing World Cup
| style='border-style: none none solid solid; background: #e3e3e3; width: 20%' | Event | style='border-style: none none solid solid; background: #e3e3e3; width: 15%' | Round | style='border-style: none none solid solid; background: #e3e3e3; width: 10%' | Result | style='border-style: none none solid solid; background: #e3e3e3; width: 43%' | Opponent | style='border-style: none none solid solid; background: #e3e3e3; width: 12%' | Score |
|---|---|---|---|---|---|---|---|---|---|
| align='center' | First | Win | align='left' |  Laszlo Szuecs | align='left' | 19-11 | |||
| align='center' | Quarterfinal | Win | align='left' | Bakyt Amanbayev | align='left' | 13-11 | |||
| align='center' | Semifinal | Loss | align='left' |  Julio Gonzalez | align='left' | RSC 1 | |||
| align='center'; bgcolor="#cc9966" | 3rd Place | Win | align='left' |  Kamel Marjouane | align='left' | pts |
| style='border-style: none none solid solid; background: #e3e3e3; width: 20%' | Event | style='border-style: none none solid solid; background: #e3e3e3; width: 15%' | Round | style='border-style: none none solid solid; background: #e3e3e3; width: 10%' | Result | style='border-style: none none solid solid; background: #e3e3e3; width: 43%' | Opponent | style='border-style: none none solid solid; background: #e3e3e3; width: 12%' | Score |
|---|---|---|---|---|---|---|---|---|---|
| align='center' | First | Win | align='left' |  Yun Yong-Chol | align='left' | 11-2 | |||
| align='center' | Second | Win | align='left' | Artur Grigorian | align='left' | 9-3 | |||
| align='center' | Quarterfinal | Win | align='left' | Ronald Chavez | align='left' | KO 1 | |||
| align='center'; bgcolor="#cc9966" | Semifinal | Loss | align='left' |  Oscar De La Hoya | align='left' | 10-11 | |||