| You Sang-joo | |
| Birth Date: | 11 December 1968 |
| Sport: | Fencing |
| Retired: | Yes |
| Coaching: | Yes |
| Show-Medals: | yes |
| Hangul: | 유상주 |
| Rr: | Yu Sangju |
| Mr: | Yu Sangju |
You Sang-joo (born 11 December 1968) is a retired South Korean fencer. He competed in the individual and team sabre events at the 1996 Summer Olympics.[1]