Division Three Grand Finals
| Year | Winners | Score | Runners-Up | |
|---|---|---|---|---|
| 1974 | Subiaco City | 2-1 | Lathlain Meazza | |
| 1975 | No competition | |||
| 1976 | Canning Corinthian | 3-1 | Sorrento | |
| 1977 | Kelmscott | 4-0 | Bassendean Caledonian | |
| 1978 | No competition | |||
| 1979 | Swan Athletic | 1-0 | Bassendean Caledonian | |
| 1980 | Balga | 2-0 | University | |
| 1981 | Swan Athletic | 2-0 | Balcatta Etna | |
| 1982 | No competition | |||
| 1983 | Wanneroo | 3-2 | Rockingham United | |
| 1984 | Fremantle Benfica | ?-? (5p-3p) | Sorrento | |
| 1985 | Queens Park | 2-0 | Swan Athletic | |
| 1986 | Swan Athletic | ?-? (5p-4p) | Mount Lawley Serbia | |
| 2020 | Carramar Shamrock Rovers | 3-1 | Dianella White Eagles |