This is a list of Big West Conference champions in college baseball. The Big West Conference is composed of eleven schools which participate in baseball, with each school playing all of the others in three game series. The team with the best record is named champion, and wins the league's automatic bid to the NCAA Division I Baseball Championship.
The conference began sponsoring baseball under the name Pacific Coast Athletic Association in 1970 and crowned a champion each year through 1976. Beginning in 1977, the league joined with the West Coast Conference for baseball, with competition in two separate conferences - the Northern California Baseball Association and the Southern California Baseball Association. This arrangement lasted through the 1984 season, when the league once again began sponsoring baseball for its members. In 1988, the conference adopted the Big West name. In 1990, the league held a divisional playoff, and in 1997 and 1998, the league held a tournament to determine its champion. [1] in 2025, the league is bringing back a tournament to determine its champion.
| Year | Regular Season Champion | Record |
|---|---|---|
| 1970 | No. 23 Long Beach State | 11–4 |
| 1971 | No. 21 San Jose State Fresno State | 13–8 |
| 1972 | No. 17 UC Santa Barbara | 14–4 |
| 1973 | Cal State Los Angeles | 13–5 |
| 1974 | No. 12 Cal State Los Angeles | 18–5 |
| 1975 | No. 8 Cal State Fullerton | 14–7 |
| 1976 | No. 26 Cal State Fullerton | 17–4 |
Northern California Baseball Association
| Southern California Baseball Association
|
| Year | Regular Season Champion | Record | Postseason Champion |
|---|---|---|---|
| 1985 | No. 12 Fresno State (North) Cal State Fullerton (South) | 23–7 21–9 | Fresno State def. Cal State Fullerton (2–0) 1985 Pacific Coast Athletic Association Baseball Championship Series |
| 1986 | No. 9 UC Santa Barbara | 18–3 | |
| 1987 | No. 7 Cal State Fullerton | 18–3 | |
| 1988 | No. 7 Fresno State | 20–1 | |
| 1989 | No. 8 Long Beach State No. 12 Fresno State | 17–4 | |
| 1990 | No. 28 Fresno State No. 9 Cal State Fullerton | 13–5 | |
| 1991 | No. 6 Fresno State Cal State Fullerton | 15–6 | |
| 1992 | No. 23 Long Beach State | 18–5 | |
| 1993 | No. 3 Long Beach State | 17–4 | |
| 1994 | No. 19 Nevada No. 20 Long Beach State No. 3 Cal State Fullerton | 16–5 16–5 15–5 | |
| 1995 | No. 1 Cal State Fullerton | 18–3 | |
| 1996 | Long Beach State | 15–6 | |
| 1997 | Nevada (North) No. 24 Long Beach State/No. 21 Cal State Fullerton (South) | 20–10 22–8 | (3) Cal State Fullerton def.(1) Long Beach State 7–2, 15–6 1997 Big West Conference baseball tournament |
| 1998 | Nevada (North) No. 11 Cal State Fullerton (South) | 17–10 25–5 | |
| 1999 | No. 6 Cal State Fullerton | 25–5 | |
| 2000 | Nevada No. 22 Cal State Fullerton | 21–9 | |
| 2001 | No. 3 Cal State Fullerton | 14–4 | |
| 2002 | No. 28 Cal State Fullerton | 19–5 | |
| 2003 | No. 11 Long Beach State | 16–5 | |
| 2004 | No. 1 Cal State Fullerton | 19–2 | |
| 2005 | No. 9 Cal State Fullerton | 16–5 | |
| 2006 | No. 4 Cal State Fullerton | 18–3 | |
| 2007 | No. 7 UC Riverside | 16–5 | |
| 2008 | No. 11 Cal State Fullerton No. 19 Long Beach State | 16–8 | |
| 2009 | No. 9 UC Irvine | 22–2 | |
| 2010 | No. 12 Cal State Fullerton | 21–3 | |
| 2011 | No. 18 Cal State Fullerton | 19–5 | |
| 2012 | No. 19 Cal State Fullerton | 17–7 | |
| 2013 | No. 10 Cal State Fullerton | 23–4 | |
| 2014 | No. 19 Cal Poly | 19–5 | |
| 2015 | No. 6 Cal State Fullerton | 19–5 | |
| 2016 | No. 28 Cal State Fullerton | 17–7 | |
| 2017 | No. 9 Long Beach State | 20–4 | |
| 2018 | Cal State Fullerton | 18–6 | |
| 2019 | UC Santa Barbara | 19–5 | |
| 2020 | Season cancelled in March due to the coronavirus pandemic | ||
| 2021 | No. 17 UC Irvine | 32–8 | |
| 2022 | No. 17 UC Santa Barbara | 27–3 | |
| 2023 | UC San Diego | 21–9 | |
| 2024 | No. 19 UC Santa Barbara | 26–4 | |
| 2025 | No. 12 UC Irvine | 24-6 | |