| Year: | 2021 |
| Conference: | Big West Conference |
| Division: | I |
| Gender: | Women's |
| Teams: | 9 |
| Arena: | Michelob Ultra Arena |
| City: | Paradise, Nevada |
| Champions: | UC Davis |
| Titlecount: | 3rd |
| Coachcount: | 3rd |
| Television: | ESPN3 |
The 2021 Big West Conference women's basketball tournament (officially known as the Air Force Reserve Big West Women's Basketball Championship due to sponsorship reasons) was the postseason women's basketball tournament for the 2020–21 season in the Big West Conference. The tournament was held March 9–13, 2021.[1] The tournament winner received an automatic invitation to the 2021 NCAA Division I women's basketball tournament. UC Davis won the conference tournament championship game over UC Irvine, 61–42.[2]
Teams are seeded by record within the conference, with a tie–breaker system to seed teams with identical conference records. Only the top nine teams in the conference will qualify for the tournament.
| Seed | School | Conference | Tiebreaker 1 | |
|---|---|---|---|---|
| 1 | UC Davis | 9–1 | ||
| 2 | UC Irvine | 11–4 | ||
| 3 | Long Beach State | 11–7 | ||
| 4 | CSU Bakersfield | 7–6 | 2–0 vs. Hawai'i | |
| 5 | Hawai'i | 7–6 | 0–2 vs. CSUB | |
| 6 | Cal Poly | 8–8 | ||
| 7 | UC Santa Barbara | 7–9 | ||
| 8 | UC Riverside | 5–9 | ||
| 9 | Cal State Fullerton | 2–14 |
| Game | Time* | Matchup | Score | Television | ||
|---|---|---|---|---|---|---|
| First round – Tuesday, March 9, 2021 | ||||||
| 1 | 12:00 p.m. | No. 8 UC Riverside vs. No. 9 Cal State Fullerton | 51-55 | ESPN3 | ||
| Quarterfinals – Wednesday, March 10, 2021 | ||||||
| 2 | 11:00 a.m. | No. 1 UC Davis vs. No. 9 Cal State Fullerton | 61-54 | ESPN3 | ||
| 3 | 2:00 p.m. | No. 4 CSU Bakersfield vs. No. 5 Hawai'i | 67-81 | |||
| 4 | 5:00 p.m. | No. 2 UC Irvine vs. No. 7 UC Santa Barbara | 92-90 | |||
| 5 | 8:00 p.m. | No. 3 Long Beach State vs. No. 6 Cal Poly | 60-61 | |||
| Semifinals – Friday, March 12, 2021 | ||||||
| 6 | 12:00 p.m. | No. 5 Hawai'i vs. No. 1 UC Davis | 52-64 | ESPN3 | ||
| 7 | 3:00 p.m. | No. 6 Cal Poly vs. No. 2 UC Irvine | 59-68 | |||
| Championship – Saturday, March 13, 2021 | ||||||
| 8 | 5:00 p.m. | No. 1 UC Davis vs. No. 2 UC Irvine | 61-42 | ESPN3 | ||