The 2011–12 North West Counties Football League season was the 30th in the history of the North West Counties Football League, a football competition in England. Teams were divided into two divisions: the Premier Division and Division One.
| Competition: | North West Counties Football League Premier Division |
| Season: | 2011–12 |
| Winners: | Ramsbottom United |
| Promoted: | Ramsbottom United |
| Relegated: | Atherton Laburnum Rovers |
| Matches: | 461 |
| Total Goals: | 1492 |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
The Premier Division featured three new teams:
| Competition: | North West Counties Football League Division One |
| Season: | 2011–12 |
| Winners: | Wigan Robin Park |
| Promoted: | Norton United Wigan Robin Park |
| Relegated: | None |
| Matches: | 306 |
| Total Goals: | 1145 |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
Division One featured three new teams: