| Norgesmesterskapet i fotball for herrer | |
|---|---|
| Tournament details | |
| Country |  Norway |
| Teams | 128 (main competition) |
| Defending champions | Viking |
| Final positions | |
| Champions | Rosenborg (5th title) |
| Runner-up | Fyllingen |
The 1990 Norwegian Football Cup was the 85th edition of the Norwegian Football Cup. The final took place at Ullevaal Stadion in Oslo on 21 October 1990. Rosenborg were won the Norwegian Cup after they defeated Fyllingen with the score 5–1. This was Rosenborg's fifth Norwegian Cup title.