| Kim You-Sung | |
| Fullname: | Kim You-Sung |
| Birth Date: | 4 December 1988 |
| Birth Place: | South Korea |
| Currentclub: | Goyang Hi FC |
| Clubnumber: | 24 |
| Position: | Midfielder |
| Youthyears1: | 2007–2009 |
| Youthclubs1: | Kyung Hee University |
| Years1: | 2010–2011 |
| Caps1: | 3 |
| Goals1: | 0 |
| Years2: | 2011–2013 |
| Caps2: | 18 |
| Goals2: | 2 |
| Years3: | 2014 |
| Caps3: | 11 |
| Goals3: | 0 |
| Years4: | 2015– |
| Caps4: | 57 |
| Goals4: | 13 |
| Pcupdate: | 1 December 2016 |
| Hangul: | 김유성 |
| Hanja: | 金侑聖 |
| Rr: | Gim Yu-Seong |
| Mr: | Kim Yu-Sŏng |
Kim You-Sung (; born 4 December 1988) is a South Korean footballer who plays for Goyang Hi FC in the K League Challenge.