Oskar Fredriksen (9 February 1909 – 19 June 1991) was a Norwegian cross-country skier who competed in the 1930s. He won a gold medal in the 4 × 10 km relay at the 1937 FIS Nordic World Ski Championships.
| Year | Age | 18 km | 50 km | 4 × 10 km relay | |
|---|---|---|---|---|---|
| 25 | 49 | — | — | ||
| 28 | 21 | 12 | Gold | ||
| 29 | 40 | 43 | — |