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.
To put these personal records in perspective, the WR column lists the official world records on the dates that Didriksen skated his personal records.
| Event | Result | Date | Venue | WR | |
|---|---|---|---|---|---|
| 500 m | 38.7 | 11 January 1977 | Hamar | 37.00 | |
| 1,000 m | 1:17.34 | 20 March 1977 | Medeo | 1:15.33 | |
| 1,500 m | 2:05.8 | 4 February 1977 | Oslo | 1:55.61 | |
| 3,000 m | 4:37.1 | 31 January 1971 | Inzell | 4:12.6 | |
| 5,000 m | 8:11.0 | 11 February 1973 | Elverum | 7:09.8 |