Taiyo Koga (古賀 太陽, Koga Taiyo, born October 28, 1998) is a Japanese football player.

[1] He plays for Kashiwa Reysol.

Taiyo Koga joined J1 League club Kashiwa Reysol in 2017.

Updated to end of 2018 season.

This biographical article related to a Japanese association football defender born in the 1990s is a stub.