| Medal record | ||
|---|---|---|
| Men's Tennis | ||
| Competitor for South Korea | ||
| Asian Games | ||
| Gold | 1986 Seoul | Singles |
| Gold | 1986 Seoul | Doubles |
| Gold | 1986 Seoul | Mixed doubles |
| Gold | 1986 Seoul | Team |
Yoo Jin-Sun (born July 12, 1962 in Seocheon, Chungcheongnam-do) is a former tennis player from South Korea, who represented his native country as a qualifier at the 1988 Summer Olympics in Seoul. There he was defeated in the first round by the number twelve seed from Israel, Amos Mansdorf. The right-hander reached his highest singles ATP-ranking on June 13, 1988, when he became the number 194 of the world.