| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | Joannes Julianus "John"•Langenus |
| Used name | John•Langenus |
| Other names | Jean Langenus |
| Born | 9 December 1891 in Berchem, Antwerpen (BEL) |
| Died | 1 October 1952 in Berchem, Antwerpen (BEL) |
| NOC | Belgium |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1928 Summer Olympics | Football (Football) | BEL |
John Langenus | ||||
| Football, Men (Olympic) | Match 1/2 | Argentina — Uruguay | Linesman | ||||
| Football, Men (Olympic) | Match 3/4 | Italy — Egypt | Referee | ||||
| Football, Men (Olympic) | Match #8 | Uruguay — Netherlands | Referee |