| Jon Jarl | |
| Earl | |
| More: | no |
| Reign: | ?–1206 |
| Predecessor: | Johan Sverkersson |
| Successor: | Knut Birgersson |
| Other Titles: | "Terror of the Heathen" |
| Noble Family: | Possibly Sverker |
| Birth Name: | Jon |
| Death Date: | c. 1206 |
| Death Place: | Asknäs, Ekerö, Sweden |
| Burial Place: | Linköping Cathedral (disputed) |
| Occupation: | Privateer |
| Website: | | module = } |