| South Australia Champions | |||||||||
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| Division Three | |||||||||
| Year | Champions | Runners Up | Third Placed | ||||||
| 1929 | North United | Northumberland & Durham | Rosewater | ||||||
| 1930 | Unley United | Rosewater | Southern United | ||||||
| 1931 | Cheltenham | West Torrens United | Port Thistle | ||||||
| 1932 | Largs Athletic | Port Thistle | |||||||
| 1933 | No Competition | ||||||||
| 1934 | No Competition | ||||||||
| 1935 | No Competition | ||||||||
| 1936 | No Competition | ||||||||
| 1937 | |||||||||
| 1938 | The third division was the reserves of Division One and not a competitive league | ||||||||
| 1939 | Birkalla Rovers B | Sth Aust Railways | Hellenic | ||||||
| 1940 | The third division was the reserves of Division One and was abandoned mid season | ||||||||
| 1941 | No Competition | ||||||||
| 1942 | No Competition | ||||||||
| 1943 | No Competition | ||||||||
| 1944 | No Competition | ||||||||
| 1945 | No Competition | ||||||||
| 1946 | The third division was the reserves of Division One and not a competitive league | ||||||||
| 1947 | The third division was the reserves of Division One and not a competitive league | ||||||||
| 1948 | The third division was the reserves of Division One and not a competitive league | ||||||||
| 1949 | Melita | Peak United | Thebarton Ramblers | ||||||
| 1950 | Postal Institute | ETSA | Tramways | ||||||
| 1951 | Budapest | Bohemians | Slovakia | ||||||
| 1952 | Polonia | Vytis | British Wanderers | ||||||
| 1953 | Lion | Slovakia | Pegasus | ||||||
| 1954 | Orange | Pegasus | 2:1 | Playoff between two regional winners | |||||
| 1955 | Salisbury United | Hungaria | Olympic | ||||||
| 1956 | Victoria | Roma | Croatia | ||||||
| Metropolitan League | |||||||||
| 1957 | Orange | Edinburgh | Croatia | ||||||
| 1958 | Austria | I.C.I. | West Adelaide | ||||||
| 1959 | Olympic | Malta United | I.C.I. | ||||||
| 1960 | Victoria | Cumberland United | Edinburgh | ||||||
| Division Three | |||||||||
| 1961 | Eastern Districts | ||||||||
| 1962 | Sturt | South Adelaide | W.R.E. | ||||||
| 1963 | W.R.E. | ||||||||
| 1964 | Windsor Athletic | Mitcham | Campbelltown City | ||||||
| 1965 | South Adelaide | Wakefield Wanderers | Campbelltown City | ||||||
| 1966 | Campbelltown City | Edinburgh | W.R.E. | ||||||
| 1967 | Para Hills | Don Largs United | Salisbury United | ||||||
| 1968 | Wakefield Wanderers | Salisbury United | South Adelaide | ||||||
| 1969 | Taperoo United | South Adelaide | Modbury | ||||||
| 1970 | South Adelaide | Don Largs United | Graduates | ||||||
| 1971 | Campbelltown City | Don Largs United | Windsor Athletic | ||||||
| 1972 | Munno Para APAC | Windsor Athletic | Don Largs United | ||||||
| 1973 | Modbury | Adelaide University | Windsor Athletic | ||||||
| 1974 | Don United | Windsor Athletic | W.R.E.I. | ||||||
| 1975 | Windsor Athletic | Woodville Districts | South Adelaide | ||||||
| 1976 | Salisbury United | South Adelaide | Orange Sturt | ||||||
| 1977 | Orange Sturt | Adelaide University | West Torrens | ||||||
| 1978 | Adelaide City | West Adelaide | Noarlunga City | ||||||
| Division Three was disbanded and merged into the Metro League | |||||||||
| 1979 | West Adelaide | Brighton City | Flinders University | ||||||
| 1980 | Orange Sturt | Adelaide University | Noarlunga City | ||||||
| 1981 | Adelaide Asteras | Adelaide University | Blackwood | ||||||
| 1982 | Blackwood | Windsor Athletic | Adelaide University | ||||||
| 1983 | Windsor Melita | Thebarton Asteras | Athelstone | ||||||
| League not Played between 1983 and 2006 when it became the State League | |||||||||
| Year | Champions | Runners Up | Score | Minor Premiers | Pts | Runners Up | Pts | Third Placed | Pts |
| 2006 | Adelaide Cobras | No Finals Series - Premiers were champions | Adelaide Cobras | 56 | Western Strikers | 49 | Adelaide Comets | 36 | |
| 2007 | Adelaide Comets | No Finals Series - Premiers were champions | Adelaide Comets | 52 | Noarlunga United | 51 | NAB | 33 | |
| 2008 | Salisbury United | No Finals Series - Premiers were champions | Salisbury United | 40 | SASI | 39 | West Adelaide | 38 | |
| 2009 | Enfield City Falcons | West Adelaide | 2:0 | Enfield City Falcons | 51 | West Adelaide | 49 | Northern Demons | 36 |
| 2010 | Playford City Patriots | Noarlunga United | 6:3 | Noarlunga United | 35 | Playford City Patriots | 30 | Northern Demons | 30 |
| 2011 | Salisbury United | South Adelaide | 3:0 | Salisbury United | 44 | West Adelaide | 43 | South Adelaide | 32 |
| 2012 | West Adelaide | No Finals Series - Premiers were champions | West Adelaide | 45 | Adelaide Hills | 42 | The Cove | 40 | |
| League not Played between 2013 and 2015 when it became the State League Two | |||||||||
| Year | Champions | Runners Up | Score | Minor Premiers | Pts | Runners Up | Pts | Third Placed | Pts |
| 2016 | Noarlunga United | No Finals Series - Premiers were champions | Noarlunga United | 38 | Gawler | 32 | Seaford Rangers | 30 | |
| 2017 | Seaford Rangers | Finals Series decided second promoted team | Seaford Rangers | 52 | Northern Demons | 50 | Fulham United | 48 | |
| 2018 | Playford City Patriots | Finals Series decided second promoted team | Playford City Patriots | 49 | Adelaide Hills | 49 | Vipers FC | 47 | |
| 2019 | Adelaide Hills | Finals Series decided second promoted team | Adelaide Hills | 52 | Gawler | 44 | Pirates | 38 | |
| 2020 | Eastern United | Finals Series decided second promoted team | Adelaide Cobras | 46 | Eastern United | 44 | Modbury Vista | 42 | |
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