Koichiro Koga

Koichiro Koga (古賀 幸一郎) is a retired Japanese male volleyball player. He was a part of the Japan men's national volleyball team. On club level, he played for Toyoda Gosei Trefuerza and then Wolf Dogs Nagoya.

His retirement was announced on March 7, 2021.

Personal life
Koga has younger brother, Taichiro Koga, who is a part of Japan men's national volleyball team as the same position.