The 2024–25 Big West Conference men's basketball season was for the Big West Conference in the 2024–25 NCAA Division I men's basketball season. The basketball teams began with practices in October followed by the start of season in November 2024. Conference play began on December 5, 2024, and ended in March, after which the top 8 member teams participated in the 2025 Big West Conference men's basketball tournament at Lee's Family Forum in Henderson, Nevada. Tournament champion UC San Diego received the conference's automatic bid to the 2025 NCAA tournament.
This is the first season in which the UC San Diego Tritons were eligible to participate in postseason play after fully completing their transition to NCAA Division I.
Each team played 20 conference games in round-robin format. The Big West conference also added a "Bold Week" in December 5–7, 2024, where two early conference games will be held. This decision was made in order for better experience and eliminating three-game weeks.
With a 85–67 win at UC Irvine on February 8, 2025, UC San Diego moved back to tie with the Anteaters at first place. On February 20, a loss by UC Irvine made the Tritons gain sole possession of first place standings, and on March 8, the Tritons won the regular season championship title outright with a win at UC Davis, their first ever outright championship. UC San Diego guard/forward Aniwaniwa Tait-Jones was named Big West Player of the Year and Triton head coach Eric Olen was named Big West Coach of the Year.
The Big West tournament was held from March 12 through March 15 at Lee's Family Forum in Henderson, Nevada. UC San Diego defeated UC Irvine 75–61 to win the school's first Big West tournament championship.
UC San Diego received the conference's automatic NCAA tournament bid, while UC Irvine, UC Riverside and Cal State Northridge earned bids to the NIT, a conference record of most teams making the NIT. The Tritons were seeded 12th in the South region, where they lost to 5th seeded Michigan 65-68. The Highlanders and the Matadors also suffered first-round exits, while the Anteaters advanced all the way to the championship game, where they fell to Chattanooga 84–85 in overtime.
Head coaches.
Coaching changes.
Cal Poly.
Following the 2023–24 season, Cal Poly head coach John Smith left the Mustangs to be the special assistant to the head coach at the University of Washington. On March 26, 2024, the school hired Colorado Mesa head coach Mike DeGeorge as the team's new head coach.
Long Beach State.
Following the 2023–24 season, Long Beach State head coach Dan Monson was hired as the head coach at Eastern Washington. On April 2, the Beach hired San Diego State assistant coach Chris Acker as the team's new head coach.
Coaches.
"Notes:"
Preseason.
Preseason Big West poll.
The Big West Preseason Coaches' Poll was released on October 15, 2024.
Regular Season.
Players of the Week.
Throughout the conference regular season, the Big West will name one player of the week each Monday.
Early season tournaments.
Of the 11 Big West Teams, 6 participated in early season tournaments. UC San Diego won the Boardwalk Battle Title with a 80-45 win over Toledo, UC Irvine claimed the Western Slam champions winning Towson 67-60, and with a 76-66 victory over Pacific, Hawaii captured the Outrigger Rainbow Classic title.
Conference matrix.
The table below summarizes the head-to-head results between teams in conference regular-season play. The home team's score is shown in boldface type.
Records against other conferences.
2024-25 records against non-conference opponents. Does not include exhibition matchups but includes postseason matchups.
Awards and Honors.
All-Big West Teams and Awards.
The Big West Conference announced its 2024-25 Men's Basketball All-Big West Teams and Awards on March 11, 2025.
NABC All-Pacific District Teams and Awards.
On March 18, 2025, NABC announced the 2024-25 NABC Division I All-District Teams and District Coaches of the Year.
Statistics.
Top Big West Rankings in National Statistics.
This section lists the Big West team with the highest national rank in each NCAA statistical category, including their rank and actual performance. The corresponding team's top individual performer is also included. 
Nationally Ranked Big West Players.
This section lists the Big West Conference players who were ranked in the top 100 nationally in each of the individual statistical categories during the 2024-25 season. The school, ranking and specific statistics are recorded.