Baseball Pac-12 Championships
Pac-12 Baseball Champions
| Year | School | ||
| 1916 | California | ||
| 1917 | California | ||
| 1918 | Oregon | ||
| 1919 | Washington | ||
| 1920 | California | ||
| 1921 | California | ||
| 1922 | Washington | ||
| 1923 | California (So.) | ||
| Washington (No.) | |||
| 1924 | California | ||
| USC | |||
| Stanford | |||
| 1925 | Stanford (So.) | ||
| Washington (No.) | |||
| 1926 | California (So.) | ||
| Washington (No.) | |||
| 1927 | USC (So.) | ||
| Stanford (So.) | |||
| California (So.) | |||
| Washington State (No.) | |||
| 1928 | California (So.) | ||
| Oregon (No.) | |||
| Washington State (No.) | |||
| 1929 | California (So.) | ||
| Washington (No.) | |||
| 1930 | USC (So.) | ||
| Washington (No.) | |||
| 1931 | Stanford (So.) | ||
| USC (So.) | |||
| Washington (No.) | |||
| 1932 | California (So.) | ||
| Washington (No.) | |||
| 1933 | California (So.) | ||
| Washington State (No.) | |||
| 1934 | California (So.) | ||
| Oregon (No.) | |||
| 1935 | California (So.) | ||
| USC (So.) | |||
| Oregon (No.) | |||
| 1936 | USC (So.) | ||
| Washington State (No.) | |||
| 1937 | USC (So.) | ||
| Oregon (No.) | |||
| 1938 | California (So.) | ||
| Oregon State (No.) | |||
| 1939 | USC (So.) | ||
| Oregon (No.) | |||
| 1940 | California (So.) | ||
| Oregon State (No.) | |||
| Washington State (No.) | |||
| 1941 | USC (So.) | ||
| Oregon (No.) | |||
| 1942 | USC (So.) | ||
| Oregon (No.) | |||
| 1943 | California (So.) | ||
| Oregon (No.) | |||
| 1944 | UCLA (So.) | ||
| Washington State (No.) | |||
| 1945 | California (So.) | ||
| Washington State (No.) | |||
| 1946 | USC (So.) | ||
| Oregon (No.) | |||
| 1947 | California | ||
| 1948 | USC | ||
| 1949 | USC | ||
| 1950 | Washington State | ||
| 1951 | USC | ||
| 1952 | Oregon State | ||
| 1953 | Stanford | ||
| 1954 | Oregon | ||
| 1955 | USC | ||
| 1956 | Washington State | ||
| 1957 | California | ||
| 1958 | USC | ||
| 1989 | USC | ||
| 1960 | California (So.) | ||
| USC (So.) | |||
| Washington State (No.) | |||
| 1961 | USC (So.) | ||
| Washington State (No.) | |||
| 1962 | USC (So.) | ||
| Oregon State (No.) | |||
| 1963 | USC (So.) | ||
| Oregon State (No.) | |||
| 1964 | USC (So.) | ||
| Oregon (No.) | |||
| 1965 | USC (So.) | ||
| Washington State (No.) | |||
| 1966 | Stanford (So.) | ||
| California (So.) | |||
| Washington State (No.) | |||
| 1967 | Stanford | ||
| 1968 | USC | ||
| 1969 | UCLA | ||
| 1970 | USC | ||
| 1971 | USC | ||
| 1972 | USC | ||
| 1973 | USC | ||
| 1974 | USC | ||
| 1975 | USC | ||
| 1976 | UCLA (So.) | ||
| Washington State (No.) | |||
| 1977 | USC | ||
| 1978 | USC | ||
| 1979 | UCLA | ||
| 1980 | Arizona | ||
| California | |||
| 1981 | Arizona State | ||
| 1982 | Arizona State | ||
| 1983 | Oregon State (No.) | ||
| Stanford (So.) | |||
| 1984 | Arizona State (So.) | ||
| Washington State (No.) | |||
| Portland state (No.) | |||
| 1985 | Stanford (So.) | ||
| Washington (No.) | |||
| 1986 | UCLA (So.) | ||
| Oregon State (No.) | |||
| 1987 | Stanford (So.) | ||
| Washington State (No.) | |||
| 1988 | Arizona State (So.) | ||
| Washington State (No.) | |||
| 1989 | Arizona (So.) | ||
| Washington State (No.) | |||
| 1990 | Stanford (So.) | ||
| Washington State (No.) | |||
| 1991 | USC (So.) | ||
| Washington State (No.) | |||
| 1992 | Arizona (So.) | ||
| Washington (No.) | |||
| 1993 | Arizona State (So.) | ||
| Washington (No.) | |||
| 1994 | Stanford (So.) | ||
| Oregon State (No.) | |||
| 1995 | USC (So.) | ||
| Washington State (No.) | |||
| 1996 | USC (So.) | ||
| Washington (No.) | |||
| 1997 | Washington | ||
| 1998 | Washington | ||
| 1999 | Stanford | ||
| 2000 | Arizona State | ||
| Stanford | |||
| UCLA | |||
| 2001 | USC | ||
| 2002 | USC | ||
| 2003 | Stanford | ||
| 2004 | Stanford | ||
| 2005 | Oregon State | ||
| 2006 | Oregon State | ||
| 2007 | Arizona State | ||
| 2008 | Arizona State | ||
| 2009 | Arizona State | ||
| 2010 | Arizona State | ||
| 2011 | UCLA | ||
| 2012 | Arizona | ||
| UCLA | |||
| 2013 | Oregon State | ||
| 2014 | Oregon State | ||
| 2015 | UCLA | ||
| 2016 | Utah | ||
| 2017 | Oregon State | ||
| 2018 | Stanford |