1999–2000 Welsh Alliance League
| Season | 1999–2000 |
|---|---|
| Champions | Halkyn United |
| Relegated | Llandyrnog United |
← 1998–99 2000–01 → | |
The 1999–2000 Welsh Alliance League was the sixteenth season of the Welsh Alliance League after its establishment in 1984. The league was won by Halkyn United.