| Goki Koshio | |
| Nationality: | Japanese |
| Birth Date: | 18 September 1991 |
| Position: | Left wing |
| Currentclub: | Toyoda Gosei |
| Nationalteam1: | Japan |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 7 |
is a Japanese handball player for Toyoda Gosei and the Japanese national team.
He participated at the 2017 World Men's Handball Championship.[1]