| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Ernst Jonas•Jonsson |
| Used name | Jonas•Jonsson |
| Born | 30 September 1873 in Stockholm, Stockholm (SWE) |
| Died | 14 March 1926 (aged 52 years 5 months 14 days) in Djursholm, Danderyd, Stockholm (SWE) |
| Affiliations | SSS, Stockholm (SWE) / KSSS, Saltsjöbaden, Nacka (SWE) |
| NOC | Sweden |
Jonas Jonsson was an engineer. As a representative of Langborg’s Shipyard he was a founding member of the Association of Yacht Shipyard Owners. Jonsson competed in sailing at two Olympic Games, both times in the 6-metre class. In 1908, he placed fifth as a crew member of the Freja, placing last in all three races. Four years later, he sailed aboard the Sass. In 1912, after places three and four in the two races, the yacht narrowly lost the match-race for bronze against the second Swedish boat Kerstin.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1908 Summer Olympics | Sailing | SWE |
Jonas Jonsson | |||
| 6 metres, Open (Olympic) | Freja | 5 | ||||
| 1912 Summer Olympics | Sailing | SWE |
Jonas Jonsson | |||
| 6 metres, Open (Olympic) | Sass | 4 |