2023–24 Lamar Cardinals basketball team

The 2023–24 Lamar Cardinals basketball team represented Lamar University during the 2023–24 NCAA Division I men's basketball season. The Cardinals were led by third-year head coach Alvin Brooks and played their home games at the Neches Federal Credit Union Arena at the Montagne Center in Beaumont, Texas. They finished the season 19–14 overall and 12–6 in Southland Conference play for a fourth-place conference finish. As the fourth-seeded team, the Cardinals were 1–1 in the SLC tournament defeating eighth-seeded New Orleans 71–57 and losing to top-seeded McNeese 57–76 in the semifinal round.

Previous season
The Cardinals finished the 2022–23 season 9–22 overall and 5–13 in Southland Conference play to finish last in conference. The Cardinals failed to qualify for the SLC tournament.

Incoming transfers
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Incoming recruits
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Southland Conference Poll
The Southland Conference released its preseason poll on October 10, 2023. Receiving 45 votes overall, the Cardinals were picked to finish ninth in the conference.

Preseason All Conference
No Cardinals were selected as members of a preseason all-conference team.

Schedule and results
!colspan=12 style=| Exhibition

!colspan=12 style=| Non-conference regular season

!colspan=12 style=| Southland regular season

!colspan=12 style=| Southland tournament

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