Jørn Didriksen (born 27 August 1953) is a former speed skater from Norway.
Representing Oslo Idrettslag, Didriksen specialised in the sprint and participated in the World Sprint Championships three times.
His best result there was a fourth place in 1975.
That same year, he also became Norwegian Sprint Champion.
At the 1976 Winter Olympics of Innsbruck, he won a silver medal on the 1,000m behind Peter Mueller.