1890–91 Welsh Amateur Cup
| Tournament details | |
|---|---|
| Country | Wales |
| Teams | 25 |
| Final positions | |
| Champions | Wrexham Victoria |
| Runners-up | Flint Town |
The 1890–91 Welsh Amateur Cup was the first season of the Welsh Amateur Cup. The cup was won by Wrexham Victoria who defeated Flint Town 4–1 in the final.