1990–91 Cypriot Cup
| Tournament details | |
|---|---|
| Country | Cyprus |
| Dates | 27 October 1990 – 9 June 1991 |
| Teams | 72 |
| Final positions | |
| Champions | Omonia (9th title) |
The 1990–91 Cypriot Cup was the 49th edition of the Cypriot Cup. A total of 72 clubs entered the competition. It began on 27 October 1990 with the first preliminary round and concluded on 9 June 1991 with the final which was held at Makario Stadium. Omonia won their 9th Cypriot Cup trophy after beating Olympiakos Nicosia 1–0 in the final.