| Oh Eun-su | |
| Birth Date: | 4 January 1993 |
| Birth Place: | Gumi, Gyeongsangbuk-do, South Korea |
| Curling Club: | Uiseong CC, Uiseong Gyeongsangbukdo Sports Council |
| World Championship Appearances: | 1 |
| Pacific Championship Appearances: | 3 |
| Olympic Appearances: | 1 (2018) |
| Hangul: | 오은수 |
| Hanja: | ! |
| Rr: | O Eunsu |
| Mr: | O Ŭnsu |
Oh Eun-su (born January 4, 1993) is a South Korean curler. He competed in the 2018 Winter Olympics as the second on the South Korean men's team skipped by Kim Chang-min.[1] In April 2018, he competed at the 2018 World Men's Curling Championship, where the South Korean men's team took fourth place in their best performance to date.[2]