| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Jakob Frederik "Sjaak"•Köhler | |
| Used name | Sjaak•Köhler | |
| Nick/petnames | Jac | |
| Born | 2 October 1902 in Amsterdam, Noord-Holland |  NED |
| Died | 19 June 1970 (aged 67 years 8 months 17 days) in Amsterdam, Noord-Holland | NED |
| Affiliations | Het Y — Amsterdam, Noord-Holland | NED |
| NOC | Netherlands | NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1924 Summer Olympics | Swimming (Aquatics) | NED |
Sjaak Köhler | |||
| 400 metres Freestyle, Men (Olympic) | 18 | |||||
| 4 × 200 metres Freestyle Relay, Men (Olympic) | Netherlands | 8 | ||||
| Water Polo (Aquatics) | NED |
Sjaak Köhler | ||||
| Water Polo, Men (Olympic) | Netherlands | 7 | ||||
| 1928 Summer Olympics | Water Polo (Aquatics) | NED |
Sjaak Köhler | |||
| Water Polo, Men (Olympic) | Netherlands | =5 |
