Ko Janssens
Biographical information
| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Jacobus Cornelius "Ko"•Janssens |
| Used name | Ko•Janssens |
| Born | 20 December 1889 in Rotterdam, Zuid-Holland (NED) |
| Died | 21 August 1970 in Epe, Gelderland (NED) |
| NOC |  Netherlands |
Results
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1920 Summer Olympics | Boxing | NED |
Ko Janssens | |||
| Lightweight, Men (Olympic) | =9 |