Pac-12 Football Champions
| Year | School | ||
| 1916 | Washington | ||
| 1917 | Washington State | ||
| 1918 | California | ||
| 1919 | Washington | ||
| Oregon | |||
| 1920 | California | ||
| 1921 | California | ||
| 1922 | California | ||
| 1923 | California | ||
| 1924 | Stanford | ||
| 1925 | Washington | ||
| 1926 | Stanford | ||
| 1927 | USC | ||
| Stanford | |||
| Idaho | |||
| 1928 | USC | ||
| 1929 | USC | ||
| 1930 | Washington State | ||
| 1931 | USC | ||
| 1932 | USC | ||
| 1933 | Oregon | ||
| Stanford | |||
| 1934 | Stanford | ||
| 1935 | California | ||
| Stanford | |||
| UCLA | |||
| 1936 | Washington | ||
| 1937 | California | ||
| 1938 | California | ||
| USC | |||
| 1939 | USC | ||
| 1940 | Stanford | ||
| 1941 | Oregon State | ||
| 1942 | UCLA | ||
| 1943 | USC | ||
| 1944 | USC | ||
| 1945 | USC | ||
| 1946 | UCLA | ||
| 1947 | USC | ||
| 1948 | Oregon | ||
| California | |||
| 1949 | California | ||
| 1950 | California | ||
| 1951 | Stanford | ||
| 1952 | USC | ||
| 1953 | UCLA | ||
| 1954 | UCLA | ||
| 1955 | UCLA | ||
| 1956 | Oregon State | ||
| 1957 | Oregon State | ||
| Oregon | |||
| 1958 | California | ||
| 1959 | Washington | ||
| USC | |||
| UCLA | |||
| 1960 | Washington | ||
| 1961 | UCLA | ||
| 1962 | USC | ||
| 1963 | Washington | ||
| 1964 | Oregon State | ||
| USC | |||
| 1965 | UCLA | ||
| 1966 | USC | ||
| 1967 | USC | ||
| 1968 | USC | ||
| 1969 | USC | ||
| 1970 | Stanford | ||
| 1971 | Stanford | ||
| 1972 | USC | ||
| 1973 | USC | ||
| 1974 | USC | ||
| 1975 | UCLA | ||
| California | |||
| 1976 | USC | ||
| 1977 | Washington | ||
| 1978 | USC | ||
| 1979 | USC | ||
| 1980 | Washington | ||
| 1981 | Washington | ||
| 1982 | UCLA | ||
| 1983 | UCLA | ||
| 1984 | USC | ||
| 1985 | UCLA | ||
| 1986 | Arizona State | ||
| 1987 | USC | ||
| UCLA | |||
| 1988 | USC | ||
| 1989 | USC | ||
| 1990 | Washington | ||
| 1991 | Washington | ||
| 1992 | Washington | ||
| Stanford | |||
| 1993 | UCLA | ||
| Arizona | |||
| USC | |||
| 1994 | Oregon | ||
| 1995 | USC | ||
| Washington | |||
| 1996 | Arizona State | ||
| 1997 | Washington State | ||
| 1998 | UCLA | ||
| 1999 | Stanford | ||
| 2000 | Oregon | ||
| Oregon State | |||
| Washington | |||
| 2001 | Oregon | ||
| 2002 | USC | ||
| Washington State | |||
| 2003 | USC | ||
| 2004 | USC^ | ||
| 2005 | USC^ | ||
| 2006 | USC | ||
| California | |||
| 2007 | USC | ||
| Arizona State | |||
| 2008 | USC | ||
| 2009 | Oregon | ||
| 2010 | Oregon | ||
| 2011 | Oregon | ||
| 2012 | Stanford | ||
| 2013 | Stanford | ||
| 2014 | Oregon | ||
| 2015 | Stanford | ||
| 2016 | Washington | ||
| 2017 | USC | ||
| 2018 | Washington |