Jon Duncan (born 6 October 1975)[1] is a British orienteering competitor and world champion.

He received a gold medal in the relay event at the 2008 World Orienteering Championships in Olomouc, together with Graham Gristwood and Jamie Stevenson.

[2] He received a bronze medal in relay at the 2003 World Orienteering Championships in Rapperswil/Jona, together with Daniel Marston and Jamie Stevenson[3][4] He finished 5th in the world championship relay in 1999,[5] and also 5th in 2004.

[6] In both 2000 and 2001 Duncan won the British long distance orienteering championships.

[7] In 2009 he won the prestigious Jukola Relay with club Kristiansand OK.[8]