| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Jacobus Marinus "Koos"•Schouwenaar | |
| Used name | Koos•Schouwenaar | |
| Born | 9 October 1902 in Alblasserdam, Zuid-Holland |  NED |
| Died | 22 June 1941 (aged 38 years 8 months 13 days) in North Sea |  UNK |
| Affiliations | Laga — Delft, Zuid-Holland | NED |
| NOC | Netherlands | NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1928 Summer Olympics | Rowing | NED |
Koos Schouwenaar | |||
| Eights, Men (Olympic) | Netherlands | 2 h4 r3/7 |
