| Kōhei Miyadai | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 1 July 1995 |
| Birth Place: | Yokohama, Kanagawa, Japan |
| Debutdate: | August 23 |
| Debutyear: | 2018 |
| Debutteam: | Hokkaido Nippon-Ham Fighters |
| Finaldate: | July 17 |
| Finalyear: | 2022 |
| Finalteam: | Tokyo Yakult Swallows |
| Statyear: | 2022 season |
| Stat1label: | Win–loss record |
| Stat1value: | 0-0 |
| Stat2label: | Earned Run Average |
| Stat2value: | 9.00 |
| Stat3label: | Strikeouts |
| Stat3value: | 7 |
| Stat4label: | Saves |
| Stat4value: | 0 |
| Stat5label: | Holds |
| Stat5value: | 0 |
| Teams: | |
is a Japanese professional baseball pitcher for the Tokyo Yakult Swallows of Nippon Professional Baseball (NPB). He has played in Nippon Professional Baseball (NPB) for the Hokkaido Nippon-Ham Fighters.
Hokkaido Nippon-Ham Fighters selected Miyadai with the seventh selection in the 2017 NPB draft.[1]
On August 23, 2018, Miyadai made his NPB debut.
On December 2, 2020, he become a free agent.[2]
On December 23, 2020, Miyadai signed with Tokyo Yakult Swallows of NPB.[3]