Cymru Alliance
The Cymru Alliance League was a football league in north and central Wales which formed the second level of the Welsh football league system. From the 2019/20 season onwards, it was replaced by the Cymru North.
If the team which finished top of the league held a Domestic Licence, it could apply for promotion to the Welsh [Premier League] and was replaced by one of the bottom two teams in the Welsh Premier League.
If the league champions did not hold a Domestic Licence, then the team which finished second, if in possession of a Domestic Licence, could be promoted instead. The most successful club in the league was Caernarfon Town with three titles.
The Cymru Alliance also operated the Cymru Alliance League Cup, a knock out competition contested by members of the league
The teams also participated in Welsh Cup, the main Cup competition in Wales.
Teams in the final 2018–19 season
| Team | Location | Ground | Position in 2017-18 |
| Airbus UK Broughton | Broughton | The Airfield | 3rd |
| Bangor City | Bangor | Nantporth | 2nd in Welsh Premier League |
| Buckley Town | Buckley | Globe Way | 1st in Welsh National League (Wrexham Area) Premier Division |
| Conwy Borough | Conwy | Y Morfa Stadium | 1st in Welsh Alliance League Division 1 |
| Denbigh Town | Denbigh | Central Park | 2nd |
| Flint Town United | Flint | Cae-y-Castell | 11th |
| Gresford Athletic | Gresford | Clappers Lane | 8th |
| Guilsfield | Guilsfield | Guilsfield Community Centre | 4th |
| Holyhead Hotspur | Holyhead | The New Oval | 12th |
| Holywell Town | Holywell | Halkyn Road | 5th |
| Llanrhaeadr YM | Llanrhaeadr-ym-Mochnant | The Recreation Field | 1st in Mid Wales Football League Division 1 |
| Penrhyncoch | Penrhyn-coch | Cae Baker | 9th |
| Porthmadog | Porthmadog | Y Traeth | 7th |
| Prestatyn Town | Prestatyn | Bastion Road | 12th in Welsh Premier League |
| Rhyl | Rhyl | Belle Vue | 6th |
| Ruthin Town | Ruthin | Memorial Playing Fields | 10th |