| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Johan Harald Alfred•Wallin |
| Used name | Harald•Wallin |
| Born | 27 February 1887 in Göteborg (Gothenburg), Västra Götaland (SWE) |
| Died | 16 June 1946 in Göteborg (Gothenburg), Västra Götaland (SWE) |
| Affiliations | GKSS, Göteborg (SWE) |
| NOC | Sweden |
| Medals | OG |
| Gold | 1 |
| Silver | 1 |
| Bronze | 0 |
| Total | 2 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1908 Summer Olympics | Sailing | SWE |
Harald Wallin | |||
| 8 metres, Open (Olympic) | Vinga | 2 | Silver | |||
| 1912 Summer Olympics | Sailing | SWE |
Harald Wallin | |||
| 10 metres, Open (Olympic) | Kitty | 1 | Gold |