1990–91 Copa del Rey
| 89th Copa del Rey | |
|---|---|
| Tournament details | |
| Country | Spain |
| Teams | 86 |
| Final positions | |
| Champions | Club Atlético de Madrid |
| Runners-up | RCD Mallorca |
| Tournament statistics | |
| Matches played | 169 |
| Goals scored | 464 (2.75 per match) |
The 1990–91 Copa del Rey was the 89th staging of the Spanish Cup. The competition began on 5 September 1990 and ended on 29 June 1991 with the final.
It was won by Club Atlético de Madrid.