| Competition: | Cymru Alliance |
| Season: | 2006–07 |
| Winners: | Llangefni Town |
| Prevseason: | 2005–06 |
| Nextseason: | 2007–08 |
The 2006–07 Cymru Alliance was the seventeenth season of the Cymru Alliance after its establishment in 1990. The league was won by Llangefni Town.