| Roles | Competed in Olympic Games • Competed in Intercalated Games |
|---|---|
| Sex | Male |
| Full name | Gustaf Caesar Laurentius•Wretman |
| Used name | Gustaf•Wretman |
| Born | 10 August 1888 in Stockholm, Stockholm (SWE) |
| Died | 17 October 1949 in Jersey City, New Jersey (USA) |
| Measurements | 174 cm / 80 kg |
| Affiliations | Stockholms KK, Stockholm (SWE) / SK Neptun, Stockholm (SWE) |
| NOC | Sweden |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1906 Intercalated Games | Swimming (Aquatics) | SWE |
Gustaf Wretman | |||
| 400 metres Freestyle, Men (Intercalated) | ||||||
| 1 mile Freestyle, Men (Intercalated) | ||||||
| 4 × 250 metres Freestyle Relay, Men (Intercalated) | Sweden | 5 | ||||
| 1908 Summer Olympics | Swimming (Aquatics) | SWE |
Gustaf Wretman | |||
| 1,500 metres Freestyle, Men (Olympic) | 3 h6 r1/3 | |||||
| 4 × 200 metres Freestyle Relay, Men (Olympic) | Sweden | 3 h2 r1/2 | ||||
| 100 metres Backstroke, Men (Olympic) | 3 h6 r1/3 |