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 |
| 2019 | Oregon |
| 2020 | Oregon |