| Personal information | |
|---|---|
| Full name | Manabu Koga |
| National team | Japan |
| Born | April 5, 1935 |
| Died | May 18, 1974 (aged 39) |
| Sport | |
| Country | Japan |
| Sport | swimming |
| Updated on 6 November 2015. | |
Manabu Koga (5 April 1935 – 18 May 1974) was a Japanese swimmer who competed in the 1956 Summer Olympics.