| Competition: | Welsh Alliance League |
| Season: | 2011–12 |
| Winners: | Division 1 – Holyhead Hotspur Division 2 – Glantraeth |
| Relegated: | Division 1 – Caernarfon Wanderers & Llanfairpwll |
| League Topscorer: | Division 1 [1] Division 2 |
| Biggest Home Win: | Division 1 Division 2 |
| Biggest Away Win: | Division 1 Division 2 |
| Highest Scoring: | Division 1 Division 2 |
| Matches: | 372 |
| Total Goals: | 1496 |
| Highest Attendance: | 850 – Division 1 150 – Division 2 |
| Lowest Attendance: | 40 – Division 1 25 – Division 2 |
| Average Attendance: | Division 1 – 123 Division 2 – 59 |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
| Updated: | 15 March 2019 |
The 2011–12 Welsh Alliance League, known as the Lock Stock Welsh Alliance League for sponsorship reasons, is the 28th season of the Welsh Alliance League, which consists of two divisions: the third and fourth levels of the Welsh football pyramid.
There are sixteen teams in Division 1 and twelve teams in Division 2, with the champions of Division 1 promoted to the Cymru Alliance and the bottom two teams relegated to Division 2. In Division 2, the champions, and runners-up are promoted to Division 1.
The season began on 13 August 2011 and concluded on 8 May 2012 with Holyhead Hotspur as Division 1 champions, Llanfairpwll and Caernarfon Wanderers, who folded at the start of the 2012–13 season,[2] were relegated to Division 2. In Division 2, Glantraeth were champions with Llanberis as runners-up.
Conwy United were champions in the previous season and were promoted to the Cymru Alliance.
Llanberis were relegated and replaced by Division 2 champions, Caernarfon Wanderers and runners-up, Bodedern Athletic, who were promoted to Division 1.
| Team | Location | Ground | |
|---|---|---|---|
| Wern Mynach | |||
| Parc Meurig | |||
| Cae'r Ysgol | |||
| The Oval | |||
| Caernarfon Wanderers | Cae Top | ||
| Central Park | |||
| Cae Ffwt | |||
| Maes Meurig | |||
| The New Stadium | |||
| Halkyn Road | |||
| Arriva Ground | |||
| Maes Eilian | |||
| Eithin Duon | |||
| Gwydir Park | |||
| Cae'r Delyn | |||
| Leisure Centre, Recreation Road |
Caernarfon Wanderers were champions in the previous season and were promoted to Division 1 along with runners-up, Bodedern Athletic. They were replaced by Gwynedd League champions, Glantraeth who were promoted to Division 2.
| Team | Location | Ground | |
|---|---|---|---|
| Lôn Bach | |||
| Cae Clyd | |||
| Connah's Quay Town | Dock Road | ||
| Gaerwen | Lôn Groes | ||
| Trefdraeth | |||
| Bagillt Road | |||
| Pant Newydd | |||
| Kinmel Bay Sports | Y Morfa | ||
| Ffordd Padarn | |||
| Cae Nant | |||
| Maes Dulyn | |||
| Penmaenmawr Phoenix | Cae Sling |