College World Series Championships by Pac-12 School since conference expanded before 1979 season

RankSchoolChampionshipsYears
1Arizona31980, 1986, 2012
2tOregon St.22006, 2007
2tStanford21987, 1988
4tUSC11998
4tArizona St.11981
4tUCLA12013

Through 2016 season