| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Jānis•Prātnieks |
| Used name | Jānis•Prātnieks |
| Other names | Yanis Pratnieks, Янис Пратниекс |
| Born | 27 July 1887 in Sauka, Jēkabpils novads (LAT) |
| Affiliations | Rīgas Marss |
| NOC |  Russian Federation |
| Nationality |  Latvia |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | Nationality | As | |
|---|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Cycling Road (Cycling) | RUS |
LAT |
Jānis Prātnieks | |||
| Road Race, Men (Olympic) | |||||||
| Road Race, Team, Men (Olympic) | Russia |
