| Youn Sung-Woo | |
| Fullname: | Youn Sung-Woo |
| Birth Date: | 8 November 1989 |
| Birth Place: | South Korea |
| Currentclub: | Goyang Hi FC |
| Clubnumber: | 19 |
| Position: | Midfielder |
| Youthyears1: | 2008–2011 |
| Youthclubs1: | Sangji University |
| Years1: | 2012–2013 |
| Caps1: | 1 |
| Goals1: | 0 |
| Years2: | 2013 |
| Clubs2: | → Goyang Hi FC (loan) |
| Caps2: | 22 |
| Goals2: | 0 |
| Pcupdate: | 20 December 2013 |
Youn Sung-Woo (; born 8 November 1989) is a South Korean footballer who played as midfielder for Goyang Hi FC in K League Challenge.
He was selected by FC Seoul in 2012 K-League draft. He made only an appearance in his debut season.
He moved to Goyang Hi FC on loan in 2013.[1]