| Takuya Koyama | |
| Fullname: | Takuya Koyama |
| Birth Date: | 20 April 1997 |
| Birth Place: | Tokyo, Japan |
| Position: | Defender |
| Currentclub: | FC Tokyo |
| Clubnumber: | 15 |
| Youthclubs1: | FC Tokyo |
| Years1: | 2016– |
| Clubs1: | FC Tokyo |
is a Japanese football player.[1] He last played for FC Tokyo but has been without a club since 2017.
Takuya Koyama joined FC Tokyo in 2016. On May 29, he debuted in J3 League (v AC Nagano Parceiro).[2] [3]