The 2023–24 LSU Tigers men's basketball team represented Louisiana State University during the 2023–24 NCAA Division I men's basketball season.

The team's head coach was Matt McMahon, in his second season at LSU.

The Tigers played their home games at Pete Maravich Assembly Center in Baton Rouge, Louisiana as a member of the Southeastern Conference.

The Tigers finished the season 13–18, 2–16 in SEC Play to finish in last place, despite starting the season with an impressive 12–1 run.

As the 14th seed in the SEC tournament, the Tigers defeated Georgia in the first round before falling to Vanderbilt in the second round.