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 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 |