| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Joseph Marius•Lejeune |
| Used name | Marius•Lejeune |
| Born | 2 November 1882 in Amiens, Somme (FRA) |
| Died | 5 September 1949 in Anglet, Pyrénées-Atlantiques (FRA) |
| Measurements | 168 cm |
| NOC | France |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Rowing | FRA |
Marius Lejeune | |||
| Eights, Men (Olympic) | Société Nautique de Bayonne | 2 h1 r1/4 |