Yoo Yong-sung
| Medal record | ||
|---|---|---|
| Men's badminton | ||
Competitor for  South Korea
| ||
| Olympic Games | ||
| Silver | 2000 Sydney | Doubles |
| Silver | 2004 Athens | Doubles |
| World Championships | ||
| Silver | 1999 Copenhagen | Doubles |
| Bronze | 1995 Lausanne | Doubles |
| Bronze | 1997 Glasgow | Doubles |
| Sudirman Cup | ||
| Gold | 2003 Eindhoven | Team |
| Asian Games | ||
| Gold | 1994 Hiroshima | Mixed doubles |
| Gold | 2002 Busan | Doubles |
| Gold | 2002 Busan | Team |
| Silver | 1994 Hiroshima | Team |
| Bronze | 1998 Bangkok | Doubles |
| Bronze | 1998 Bangkok | Team |
| Yoo Yong-sung | |
| Hangul | 유용성 |
|---|---|
| Hanja | 柳鏞成 |
| Revised Romanization | Yu Yong-seong |
| McCune–Reischauer | Yu Yong-sŏng |
Yoo Yong-sung (born October 25, 1974) is a male badminton player from South Korea.
Yoo competed for Korea in badminton at the 2004 Summer Olympics in men's doubles with partner Lee Dong-soo. They defeated José Antonio Crespo and Sergio Llopis of Spain in the first round and Luluk Hadiyanto and Alvent Yulianto of Indonesia in the second. In the quarterfinals, Yoo and Lee beat Choong Tan Fook and Lee Wan Wah of Malaysia 11-15, 15-11, 15-9. They won the semifinal against Jens Eriksen and Martin Lundgaard Hansen of Denmark 9-15, 15-5, 15-3 but lost the final to fellow Koreans Kim Dong-moon and Ha Tae-kwon 15-11, 15-4 to finish with the silver medal.