| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Bror Karl Anton•Mannström |
| Used name | Karl•Mannström |
| Born | 26 October 1884 in Sundsvall, Västernorrland (SWE) |
| Died | 19 July 1916 in Tofteryd, Vaggeryd, Jönköping (SWE) |
| Affiliations | Fortifikationens IF, Stockholm (SWE) |
| NOC | Sweden |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Modern Pentathlon | SWE |
Karl Mannström | |||
| Individual, Men (Olympic) | 7 |