| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Joseph•Janssens | |
| Used name | Joseph•Janssens | |
| Affiliations | Les Amis Réunis — Antwerpen (Antwerp), Antwerpen |  BEL |
| NOC | Belgium | BEL |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1920 Summer Olympics | Shooting | BEL |
Joseph Janssens | |||
| Military Rifle, Standing, Men (Olympic) | 5 | |||||
| Military Rifle, Standing, Team, Men (Olympic) | Belgium | 12 | ||||
| Military Rifle, Prone, Team, Men (Olympic) | Belgium | 14 |
