| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Gustaf Oscar Gerhard•de Geer |
| Used name | Gustaf•de Geer |
| Born | 22 November 1920 in Stockholm, Stockholm (SWE) |
| Died | 23 September 2003 (aged 82 years 10 months 1 day) in Stockholm, Stockholm (SWE) |
| Measurements | 182 cm / 69 kg |
| Affiliations | K1 IF, Stockholm (SWE) |
| NOC |  Sweden |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1960 Summer Olympics | Equestrian Jumping (Equestrian) | SWE |
Gustaf de Geer | |||
| Team, Open (Olympic) | Ugly / Sweden |
