| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Stefan•Nillessen | |
| Used name | Stefan•Nillessen | |
| Born | 2 January 2003 | |
| NOC | Netherlands |  NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2024 Summer Olympics | Athletics | NED |
Stefan Nillessen | |||
| 1,500 metres, Men (Olympic) | 9 |
