| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Jan Cornelis•den Boer | |
| Used name | Jan•den Boer | |
| Born | 13 May 1889 in Gouda, Zuid-Holland |  NED |
| Died | 9 April 1944 (aged 54 years 10 months 27 days) in Gouda, Zuid-Holland | NED |
| Affiliations | GZC — Gouda, Zuid-Holland | NED |
| NOC | Netherlands | NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1924 Summer Olympics | Water Polo (Aquatics) | NED |
Jan den Boer | |||
| Water Polo, Men (Olympic) | Netherlands | 7 |
