| Yamahara Kotaro | ||
| Birth Date | 2000-09-19 (age 25) | |
| Birth Place |  |
Saitama |
| Height | 182 cm | |
| Weight | 75 kg | |
| Position | Defender | |
| Club | |
Thespa Gunma |
| Number | 16 | |
| Club Statistics | ||||||
| Season | Club | No. | League | Game | Goal | |
| 2023 | |
Fujieda MYFC | 16 | J2 | 17 | 1 |
| 2024 | |
Fujieda MYFC | 16 | J2 | 26 | 1 |
| 2025 | |
Ehime FC | 4 | J2 | 14 | 1 |
| 2026-27 | |
Thespa Gunma | 16 | J3 | ||
| Total | J1 | 0 | 0 | |||
| J2 | 57 | 3 | ||||
| J3 | 0 | 0 | ||||
