| Sport: | basketball |
| Prev Year: | 2022–23 |
| Year: | 2023–24 |
| Next Year: | 2024–25 |
| Team: | Long Beach State Beach |
| Conference: | Big West Conference |
| Short Conf: | Big West |
| Record: | 21–15 |
| Conf Record: | 10–10 |
| Head Coach: | Dan Monson |
| Hc Year: | 17th |
| Assoc Coach: | Myke Scholl |
| Asst Coach1: | Senque Carey |
| Asst Coach2: | Larry Anderson |
| Arena: | Walter Pyramid |
| Champion: | Big West Tournament champions |
| Tourney: | NCAA tournament |
| Tourney Result: | First Round |
The 2023–24 Long Beach State Beach men's basketball team represented California State University, Long Beach during the 2023–24 NCAA Division I men's basketball season. The Beach, led by 17th-year head coach Dan Monson, played their home games at the Walter Pyramid in Long Beach, California as members of the Big West Conference. They finished the season 21–15, 10–10 in Big West play to finish a tie for fifth place. As the No. 4 seed in the Big West tournament, they defeated UC Riverside, UC Irvine, and UC Davis to win the tournament championship. As a result, they received the conference's automatic bid to the NCAA tournament as the No. 15 seed in the West region. There they lost to Arizona.
After the regular season, the school announced that head coach Dan Monson would finish the postseason as the team's head coach, but would not return as head coach by mutual agreement.[1] [2] Despite this, Monson led the team to the NCAA tournament.[3] Athletic director Bobby Smitheran later stated he fired Monson to inspire the team.[4]
The Beach finished the 2022–23 season 17–16, 11–9 in Big West play to finish in seventh place.[5] In the Big West tournament, they were upset by Cal Poly in the first round.[6]
|-!colspan=12 style=| Exhibition|-!colspan=12 style=| Non-conference regular season|-!colspan=12 style=| Big West regular season|-!colspan=12 style=| Big West tournament|-!colspan=12 style=| NCAA tournamentSources:[7] [8]