| 1925/26 | Fremantle |
| 1926/27 | Claremont |
| 1927/28 | High School |
| 1928/29 | North Perth |
| 1929/30 | West Perth |
| 1930/31 | Subiaco |
| 1931/32 | North Perth |
| 1932/33 | No competition |
| 1933/34 | Mount Lawley |
| 1934/35 | Mount Lawley |
| 1935/36 | Perth Boys School |
| 1936/37 | Mount Lawley |
| 1937/38 | Subiaco |
| 1938/39 | North Perth |
| 1939/40 | Subiaco |
| 1940/41 | Subiaco |
| 1941/42 | North Perth |
| 1942/43 | Mount Lawley |
| North Perth No 2 | |
| 1943/44 | Southern Suburbs |
| 1944/45 | East Perth (CBC) |
| 1945/46 | South Perth |
| 1946/47 | South Perth |
| 1947/48 | Nedlands |
| 1948/49 | North Perth |
| 1949/50 | Fremantle |
| 1950/51 | Subiaco |
| 1951/52 | South Perth |
| 1952/53 | South Perth |
| 1953/54 | Fremantle |
| 1954/55 | South Perth |
| West Perth | |
| 1955/56 | South Perth |
| 1956/57 | South Perth |
| 1957/58 | University |
| 1958/59 | Fremantle |
| 1959/60 | Claremont-Cottesloe |
| 1960/61 | University |
| 1961/62 | University |
| 1962/63 | Fremantle |
| 1963/64 | Nedlands |
| 1964/65 | Nedlands |
| 1965/66 | Nedlands |
| 1966/67 | Scarborough No 1 |
| 1967/68 | University |
| 1968/69 | University |
| 1969/70 | Scarborough |
| 1970/71 | Floreat Park No.2 |
| 1971/72 | Nedlands |
| 1972/73 | Mount Lawley |
| 1973/74 | Bassendean-Bayswater |
| 1974/75 | South Perth |
| 1975/76 | Subiaco |
| 1976/77 | University |
| 1977/78 | Subiaco-Floreat |
| 1978/79 | Perth |
| 1979/80 | Perth |
| 1980/81 | South Perth |
| 1981/82 | University |
| 1982/83 | Subiaco-Floreat |
| 1983/84 | Subiaco-Floreat |
| 1984/85 | Subiaco-Floreat |
| 1985/86 | Midland-Guildford |
| 1986/87 | Mount Lawley |
| 1987/88 | Wanneroo |
| 1988/89 | Gosnells |
| 1989/90 | Melville |
| 1990/91 | Subiaco-Floreat |
| 1991/92 | Midland-Guildford |
| 1992/93 | Midland-Guildford |
| 1993/94 | Wanneroo |
| 1994/95 | Subiaco-Floreat |
| 1995/96 | South Perth |
| 1996/97 | Gosnells |
| 1997/98 | Scarborough |
| 1998/99 | Mount Lawley |
| 1999/00 | North Perth |
| 2000/01 | Subiaco-Floreat |
| 2001/02 | Mount Lawley |
| 2002/03 | University |
| 2003/04 | Wanneroo |
| 2004/05 | Mount Lawley |
| 2005/06 | Bayswater-Morley |
| 2006/07 | Mount Lawley |
| 2007/08 | Bayswater-Morley |
| 2008/09 | Joondalup |
| 2009/10 | South Perth |
| 2010/11 | Bayswater-Morley |
| 2011/12 | Joondalup |
| 2012/13 | South Perth |
| 2013/14 | Perth |
| 2014/15 | Perth |
| 2015/16 | Claremont-Nedlands |
| 2016/17 | Claremont-Nedlands |
| 2017/18 | South Perth |
| 2018/19 | Joondalup |
| 2019/20 | Joondalup |
Adam Morehouse
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