Jón Arnar Magnússon (born 28 July 1969 in Selfoss) is a former decathlete from Iceland.
He has won silver and bronze medals at world indoor championships, all in heptathlon, as decathlon is unsuitable for indoor contests.
Jón is the Icelandic record holder at 110 m hurdles, long jump and decathlon and former record holder at 100 m and 200 m.
This biographical article relating to Icelandic athletics and track and field is a stub.
You can help Wikipedia by expanding it.