| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Karl August•Wallenborg |
| Used name | Karl•Wallenborg |
| Born | 12 May 1875 in Tystberga, Nyköping, Södermanland (SWE) |
| Died | 16 January 1962 (aged 86 years 8 months 4 days) in Stockholm, Stockholm (SWE) |
| Affiliations | Stockholms SkarpSF, Stockholm (SWE) |
| NOC | Sweden |
Karl August Wallenborg placed 11th in the military rifle, 600 metres individual event but failed at the 300 metres event, where he dropped to 83rd place of 91 competitors. With his wife Maria Vilhelmina he had two sons. He was a construction worker by profession.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Shooting | SWE |
Karl Wallenborg | |||
| Military Rifle, Three Positions, 300 metres, Men (Olympic) | 83 | |||||
| Military Rifle, Any Position, 600 metres, Men (Olympic) | 11 |