NCAA - Pacific 12 Conference Basketball Champions
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Pacific 12 Conference Basketball Champions
| Year | Season Champion | Tournament Champion |
| 2024 | Arizona | Oregon |
| 2023 | UCLA | Arizona |
| 2022 | Arizona | Arizona |
| 2021 | Oregon | Oregon State |
| 2020 | Oregon | |
| 2019 | Washington | Oregon |
| 2018 | Arizona | Arizona |
| 2017 | Arizona, Oregon | Arizona |
| 2016 | Oregon | Oregon |
| 2015 | Arizona | Arizona |
| 2014 | Arizona | UCLA |
| 2013 | UCLA | Oregon |
| 2012 | Washington | Colorado |
| 2011 | Arizona | Washington |
| 2010 | California | Washington |
| 2009 | Washington | USC |
| 2008 | UCLA | UCLA |
| 2007 | UCLA | Oregon |
| 2006 | UCLA | UCLA |
| 2005 | Arizona | Washington |
| 2004 | Stanford | Stanford |
| 2003 | Arizona | Oregon |
| 2002 | Oregon | Arizona |
| 2001 | Stanford | |
| 2000 | Arizona, Stanford | |
| 1999 | Stanford | |
| 1998 | Arizona | |
| 1997 | UCLA | |
| 1996 | UCLA | |
| 1995 | UCLA | |
| 1994 | Arizona | |
| 1993 | Arizona | |
| 1992 | UCLA | |
| 1991 | Arizona | |
| 1990 | Arizona, Oregon State | Arizona |
| 1989 | Arizona | Arizona |
| 1988 | Arizona | Arizona |
| 1987 | UCLA | UCLA |
| 1986 | Arizona | |
| 1985 | USC, Washington | |
| 1984 | Oregon State, Washington | |
| 1983 | UCLA | |
| 1982 | Oregon State | |
| 1981 | Oregon State | |
| 1980 | Oregon State | |
| 1979 | UCLA | |
| 1978 | UCLA | |
| 1977 | UCLA | |
| 1976 | UCLA | |
| 1975 | UCLA | |
| 1974 | UCLA | |
| 1973 | UCLA | |
| 1972 | UCLA | |
| 1971 | UCLA | |
| 1970 | UCLA | |
| 1969 | UCLA | |
| 1968 | UCLA | |
| 1967 | UCLA | |
| 1966 | Oregon State | |
| 1965 | UCLA | |
| 1964 | UCLA | |
| 1963 | Stanford, UCLA | |
| 1962 | UCLA | |
| 1961 | USC | |
| 1960 | California | |
| 1959 | California | |
| 1958 | California, Oregon State | |
| 1957 | California | |
| 1956 | UCLA | |
| 1955 | Oregon State (North) | |
| 1954 | USC (South) | |
| 1953 | Washington (North) | |
| 1952 | UCLA (South) | |
| 1951 | Washington (North) | |
| 1950 | UCLA (South) | |
| 1949 | Oregon State (North) | |
| 1948 | Washington (North) | |
| 1947 | Oregon State (North) | |
| 1946 | California (South) | |
| 1945 | Oregon (North), UCLA (South) | |
| 1944 | Washington (North), California (South) | |
| 1943 | Washington (North) | |
| 1942 | Stanford (South) | |
| 1941 | Washington State (North) | |
| 1940 | USC (South) | |
| 1939 | Oregon (North) | |
| 1938 | Stanford (South) | |
| 1937 | Stanford (South) | |
| 1936 | Stanford (South) | |
| 1935 | USC (South) | |
| 1934 | Washington (North) | |
| 1933 | Oregon State (North) | |
| 1932 | California (South) | |
| 1931 | Washington (North) | |
| 1930 | USC (South) | |
| 1929 | California (South) | |
| 1928 | USC (South) | |
| 1927 | California (South) | |
| 1926 | California (South) | |
| 1925 | California (South) | |
| 1924 | California (South) | |
| 1923 | Idaho (North) | |
| 1922 | Idaho | |
| 1921 | Stanford | |
| 1920 | Stanford | |
| 1919 | Oregon | |
| 1917 | Washington State | |
| 1916 | California, Oregon State |
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Basketball Section