| Taichirō Koga | |
| Nationality: | Japanese |
| Birth Date: | October 4, 1989 |
| Birth Place: | Sasebo, Nagasaki |
| Hometown: | Sasebo, Nagasaki |
| Height: | 1.7abbr=onNaNabbr=on |
| Weight: | 70kg (150lb) |
| Spike: | 292abbr=onNaNabbr=on |
| College: | International Budo University |
| Position: | Libero |
| Years: | 2012–2015 2015–2016 2016–2017 2017–2020 2020–2022 2022– |
| Teams: |  International Budo University Toyoda Gosei Trefuerza Kokkolan Tiikerit Paris Volley Aluron Virtu Warta Zawiercie FC Tokyo Tokyo Great Bears |
| Nationalyears: | 2015–2021 |
| Medaltemplates-Title: | Medal record |
is a Japanese volleyball player, a member of the Japan men's national volleyball team, a gold medalist of the 2017 Asian Championship.[1] [2]