| Petter Thoresen | |
| Birth Date: | 10 March 1966 |
| Club: | Halden SK |
| Headercolor: | lightsteelblue |
| Show-Medals: | yes |
Petter Thoresen (born 10 March 1966)[1] is a Norwegian orienteering competitor, winner of the 1989 Individual World Orienteering Championships, the Short distance in 1993, and the Classic distance in 1997.[2] He also has a bronze medal on the Classic distance from 1993.
Thoresen is two times Relay World Champion, from 1989 and 1999, as well as having a silver medal from 1991 and a bronze medal from 1997.
He represented Halden SK. He won Jukola 5 times between 1988 and 2003.