Division One League Champions
Finishing top of the league is one of the greatest honours a team can achieve.
The top-flight competition has undergone several name changes since 1963.
| Year | Champions | Runners-up | Third |
|---|---|---|---|
| 1896 | Fremantle Wanderers | Civil Service | Perth BAFC |
| 1897 | Fremantle Wanderers | Civil Service | Cottesloe |
| 1898 | Civil Service | Fremantle Wanderers | Perth FC |
| 1899 | Perth FC | Fremantle Wanderers | Civil Service |
| 1900 | Fremantle Wanderers | Casuals | Civil Service |
| 1901 | Fremantle Wanderers | Civil Service | Corinthian |
| 1902 | Perth FC | Civil Service | Corinthian |
| 1903 | Fremantle | Olympic | Perth FC |
| 1904 | Corinthian | Perth FC | Corinthian |
| 1905 | Perth FC | Civil Service | Ex-Students |
| 1906 | Rangers | Fremantle Rovers | Perth FC |
| 1907 | Perth Rangers | Fremantle Rovers | Perth FC |
| 1908 | City United | Perth FC | Claremont |
| 1909 | Training College | Claremont | City United |
| 1910 | Claremont | City United | Rangers |
| 1911 | Rangers | Austral | Claremont |
| 1912 | Claremont | Fremantle | City United |
| 1913 | City United | Austral | Claremont |
| 1914 | Thistle | Training College | Claremont |
| 1915 | Thistle | Claremont | Perth FC |
| 1916 | Claremont Thistle | -- | Perth Combined |
| 1917 | No competition | ||
| 1918 | No competition | ||
| 1919 | Claremont | Perth City United | Thistle |
| 1920 | Perth City United | Claremont | Thistle |
| 1921 | Thistle | Claremont | Perth City United |
| 1922 | Perth City United | Northern Casuals | Claremont |
| 1923 | Claremont | Thistle | Northern Casuals |
| 1924 | Perth City | Northern Casuals | Claremont |
| 1925 | Thistle | Claremont | Northern Casuals |
| 1926 | Fremantle Caledonian | Northern Casuals | Victoria Park |
| 1927 | Fremantle Caledonian | Perth City United | Victoria Park |
| 1928 | Victoria Park | Claremont-Cottesloe | Caledonian |
| 1929 | Victoria Park | Caledonian | Thistle |
| 1930 | Northern Casuals | Caledonian | Victoria Park |
| 1931 | Victoria Park | Thistle | Northern Casuals |
| 1932 | Northern Casuals | Victoria Park | Caledonian |
| 1933 | Caledonian | Victoria Park | Northern Casuals |
| 1934 | Victoria Park | Caledonian | Thistle |
| 1935 | Victoria Park | Caledonian | Thistle |
| 1936 | Victoria Park | Caledonian | Northern Casuals |
| 1937 | Victoria Park | Caledonian | Fremantle |
| 1938 | Victoria Park | Caledonian | Fremantle City |
| 1939 | Victoria Park | Victoria Park | East Claremont |
| 1940 | East Claremont | Caledonian | Victoria Park |
| 1941 | Caledonian | East Claremont | Swan Valley |
| 1942 | No competition | ||
| 1943 | No competition | ||
| 1944 | No competition | ||
| 1945 | No competition | ||
| 1945 | Jolly Rogers | Swan Valley | Queens Park |
| 1946 | Maccabean | Caledonian | Queens Park |
| 1947 | Caledonian | Swan Athletic | |
| 1948 | North Perth | South Perth | |
| 1949 | Caledonian | Balmoral | Swan Athletic |
| 1950 | Perth City | South Perth | North Perth |
| 1951 | South Perth | North Perth | Victoria Park |
| 1952 | North Perth | Azzurri | South Perth |
| 1953 | Azzurri | North Perth | Swan Athletic |
| 1954 | Perth City | Azzurri | Swan Athletic |
| 1955 | North Perth | Perth City | Swan Athletic |
| 1956 | North Perth | Azzurri | Swan Valley |
| 1957 | Swan Athletic | South Perth | Perth City |
| 1958 | East Fremantle Tricolore | Azzurri | Swan Valley |
| 1959 | Azzurri | Olympic | East Fremantle Tricolore |
| 1960 | North Perth-Osborne (WABFA) Azzurri (WASF) | Swan Valley (WABFA) Windmills (WASF) | Perth City-Inglewood (WABFA) Swan Athletic (WASF) |
| 1961 | Swan Valley (WABFA) Windmills (WASF) | Julia (WASFA) East Fremantle Tricolore (WASF) | Spearwood Rovers (WABFA) Athena (WASF) |
| 1962 | Perth City-Inglewood (WABFA) Azzurri (WASF) | Caledonian (WABFA) East Fremantle Tricolore (WASF) | Medina (WABFA) North Perth (WASF) |
| 1963 | East Fremantle Tricolore | North Perth | West Perth Athena |
| 1964 | East Fremantle Tricolore | North Perth-Osborne | Swan Valley |
| 1965 | East Fremantle Tricolore | Azzurri | Swan Athletic |
| 1966 | Cracovia | Azzurri | East Fremantle Tricolore |
| 1967 | Azzurri | Cracovia | East Fremantle Tricolore |
| 1968 | Azzurri | Kiev | Cracovia |
| 1969 | Azzurri | East Fremantle Tricolore | Cracovia |
| 1970 | East Fremantle Tricolore | Azzurri | Cracovia |
| 1971 | Azzurri | Bayswater United | East Fremantle Tricolore |
| 1972 | East Fremantle Tricolore | Bayswater United | Azzurri |
| 1973 | Morley Windmills | Ascot | Azzurri |
| 1974 | Ascot | Azzurri | Morley Windmills |
| 1975 | Azzurri | East Fremantle Tricolore | Floreat Athena |
| 1976 | Azzurri | Morley Windmills | Floreat Athena |
| 1977 | Floreat Athena | Inglewood Kiev | Spearwood Dalmatinac |
| 1978 | Olympic Kingsway | Spearwood Dalmatinac | Floreat Athena |
| 1979 | Spearwood Dalmatinac | Kingsway Olympic | Perth Azzurri |
| 1980 | Kingsway Olympic | Spearwood Dalmatinac | Perth Azzurri |
| 1981 | Perth Azzurri | Forrestfield United | Kingsway Olympic |
| 1982 | Spearwood Dalmatinac | East Fremantle Tricolore | Inglewood Kiev |
| 1983 | West Perth Macedonia | Spearwood Dalmatinac | Inglewood Kiev |
| 1984 | West Perth Macedonia | Spearwood Dalmatinac | Floreat Athena |
| 1985 | West Perth Macedonia | Spearwood Dalmatinac | Bayswater Inter |
| 1986 | Spearwood Dalmatinac | Stirling Macedonia | Floreat Athena |
| 1987 | Stirling Macedonia | Perth Azzurri | Floreat Athena |
| 1988 | Floreat Athena | North Perth Croatia | Stirling Macedonia |
| 1989 | Floreat Athena | Perth Italia | Sorrento |
| 1990 | Floreat Athena | Perth Italia | Stirling Macedonia |
| 1991 | Floreat Athena (PSL) | Stirling Macedonia | Kelmscott Roos |
| 1992 | Perth Italia (PSL) | Stirling Macedonia | Spearwood Dalmatinac |
| 1993 | Perth Italia | Floreat Athena | Stirling Macedonia |
| 1994 | Stirling Macedonia | Inglewood Kiev | Floreat Athena |
| 1995 | Stirling Macedonia | Inglewood Falcons | Spearwood Dalmatinac |
| 1996 | Inglewood Falcons | Stirling Macedonia | Bayswater City Panthers |
| 1997 | Floreat Athena | Fremantle City | Sorrento |
| 1998 | Western Knights | Fremantle City | Joondalup City |
| 1999 | ECU Joondalup | Sorrento | Fremantle City |
| 2000 | Fremantle City | Western Knights | Perth SC |
| 2001 | Sorrento | Perth SC | Floreat Athena |
| 2002 | Perth SC | Floreat Athena | Western Knights |
| 2003 | Perth SC | Cockburn City | Western Knights |
| 2004 | Western Knights | Cockburn City | Sorrento |
| 2005 | Perth SC | Sorrento | Western Knights |
| 2006 | Sorrento | Stirling Lions | Cockburn City |
| 2007 | Floreat Athena | Perth SC | Stirling Lions |
| 2008 | Sorrento | Floreat Athena | Perth SC |
| 2009 | Western Knights | Perth SC | Floreat Athena |
| 2010 | Western Knights | Stirling Lions | Perth SC |
| 2011 | Balcatta | Perth SC | Inglewood United |
| 2012 | Bayswater City | Floreat Athena | Sorrento |
| 2013 | Stirling Lions | Bayswater City | Sorrento |
| 2014 | Bayswater City | Perth SC | Balcatta |
| 2015 | Bayswater City | Perth SC | Floreat Athena |
| 2016 | Perth SC | Inglewood United | ECU Joondalup |
| 2017 | Bayswater City | Inglewood United | Perth SC |
| 2018 | Perth SC | Perth Glory | Cockburn City |
| 2019 | Perth SC | Inglewood United | Floreat Athena |
| 2021 | ECU Joondalup | Cockburn City | Floreat Athena |
| 2021 | Perth SC | Floreat Athena | Sorrento |
| 2022 | Floreat Athena | Perth RedStar | Stirling Macedonia |
| 2023 | Perth RedStar | Stirling Macedonia | Olympic Kingsway |
| 2024 | Olympic Kingsway | Perth RedStar | Fremantle City |
| 2025 | Bayswater City | Olympic Kingsway | Perth RedStar |
Notes on League Champions
1916 Claremont and Thistle declared joint Division One champions when the league was suspended after Round 10
1947 Division One champion determined by play-off game; Caledonian (Western Division) defeated Swan Athletic (Western Division) 3-0
1948 Division One champion determined by play-off game; North Perth (Western Division) defeated South Perth (Eastern Division) 1-0
1960, 1961, 1962 Competing leagues administered by the Western Australian Soccer Football Association (WASFA) and Western Australian Soccer Federation (WASF)
1992 Competing leagues administered by the Soccer Federation of Western Australian (SFWA) and the Professional Soccer League (PSL)