2012 WA State League Premier Division
The 2012 season of the State League Premier Division started on 24 March between eleven clubs and the National Training Squad (NTC). The Season ended on 6 October with the Championship decider. The NTC did not play for competition points.
Bayswater City were the Premiers – their first title – and Sorrento were Champions.
Pre-season changes
| 2011 League | Promoted to league | Relegated from league |
| Premier Division | Bunbury Forum Force | Cockburn City Mandurah City |