Jon Tvedt (29 June 1966 – 11 January 2009) was a Norwegian orienteering competitor and athlete who specialized in mountain running.
In the relay he finished sixth together with teammates Rolf Vestre, Håvard Tveite and Petter Thoresen.
Finally, at the 1999 World Orienteering Championships in Inverness, Tvedt finished eighth in the classic distance.
[4] In 1998 Tvedt won a silver medal at the Norwegian championship in 10 kilometres cross-country running, behind Karl Johan Rasmussen.
[5] He won the inaugural Norwegian mountain running championships in 2005, ahead of Odd-Bjørn Hjelmeset and Hans Martin Gjedrem of winter sports fame.