| Competition: | Ardal NW |
| Season: | 2021–22 |
| Winners: | Mold Alexandra |
| Promoted: | Mold Alexandra Porthmadog |
| Relegated: | St Asaph City Brymbo Blaenau Amateurs |
| Prevseason: | 2020–21 |
| Nextseason: | 2022–23 |
The 2021 - 22 Ardal NW season (also known as the 2021 - 22 Lock Stock Ardal NW season for sponsorship reasons) was the first season of the new third-tier northern region football in Welsh football pyramid, part of the Ardal Leagues, after the cancellation of the previous season due to the COVID-19 pandemic in Wales.[1]
The league was made up of 16 teams competing for one automatic promotion place to Cymru North, whilst the second-placed team qualified for a play-off with the second-placed team of Ardal NE. Three teams were relegated to Tier 4.
| Team | Location | Home Ground | Capacity | |
|---|---|---|---|---|
| Blaenau Amateurs | Blaenau Ffestiniog | Cae Clyd | 1,000 | |
| Brickfield Rangers | Wrexham | Clywedog Park | 1,000 | |
| Brymbo | Broughton | Brymbo Sports Complex | 1,000 | |
| Denbigh Town | Denbigh | Central Park | 1,200 | |
| Llandudno Albion | Llandudno | Maesdu Park | 1,013 | |
| Llanrwst United | Llanrwst | Gwydyr Park | 2,000 | |
| Llanuwchllyn | Bala | Maes Tegid | 3,000 | |
| Llay Welfare | Llay | The Ring | 1,000 | |
| Mold Alexandra | Mold | Alyn Park | 3,000 | |
| Nantlle Vale | Penygroes | Maes Dulyn | 1,000 | |
| Porthmadog | Porthmadog | Y Traeth | 2,000 | |
| Rhostyllen | Rhostyllen | Vicarage Hill | 1,000 | |
| Rhydymwyn | Rhydmwyn | Vicarage Road | 1,000 | |
| Saltney Town | Saltney | Saltney Community Centre | 1,000 | |
| St Asaph City | St Asaph | Roe Plas | 1,000 | |
| Y Felinheli | Y Felinheli | Cae Seilo | 1,000 |