1990 Norwegian Football Cup
The 1990 Norwegian Football Cup was the 85th edition of the Norwegian Football Cup. The [1990 Norway|Norwegian Football Cup final|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.
Calendar
Below are the dates for each round as given by the official schedule:| Round | Date | Number of fixtures | Clubs |
| First Round | 21–24 May 1990 | 64 | 128 → 64 |
| Second Round | 30–31 May 1990 | 32 | 64 → 32 |
| Third Round | 1 July 1990 | 16 | 32 → 16 |
| Fourth Round | 25 July 1990 | 9 | 16 → 8 |
| Quarter-finals | 15 August 1990 | 4 | 8 → 4 |
| Semi-finals | 15–16 September 1990 | 2 | 4 → 2 |
| Final | 21 October 1990 | 1 | 2 → 1 |
Fourth round
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Quarter-finals
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