| Jonas Jonsson | |
| Fullname: | Ernst Jonas Jonsson |
| Nationality: | Swedish |
| Birth Date: | 30 September 1873 |
| Birth Place: | Stockholm, Sweden |
| Death Place: | Djursholm, Sweden |
| Club: | Stockholms Segelsällskap |
| Medaltemplates-Title: | Competition record |
| Medaltemplates: | |
| Show-Medals: | yes |
| Updated: | 8 May 2015 |
Ernst Jonas Jonsson (September 30, 1873 – March 14, 1926) was a sailor from the Sweden, who represented his native country at the 1908 Summer Olympics in Ryde, Great Britain. Jonsson took the 5th place in the 6 Metre.[1]