2023–24 Marshall Thundering Herd men's basketball team

The 2023–24 Marshall Thundering Herd men's basketball team represented Marshall University during the 2023–24 NCAA Division I men's basketball season. The Thundering Herd, led by tenth-year head coach Dan D'Antoni, played their home games at the Cam Henderson Center as members of the Sun Belt Conference. They finished the season 13–20, 7–11 in Sun Belt play to finish in a tie for tenth place. As the No. 10 seed in the Sun Belt tournament, they defeated Georgia State in the second round before losing to James Madison in the quarterfinals.

After the season, it was announced that head coach Dan D'Antoni was let go and replaced by his associate head coach, Cornelius Jackson.

Previous season
The Thundering Herd finished the season 24–8, 13–5 in Sun Belt play to finish in a tie for second place. They lost to Texas State in the quarterfinals of the Sun Belt tournament. Despite finishing with 24 wins, they did not participate in a postseason tournament.

The season marked the school's inaugural season in the Sun Belt Conference after spending the previous 17 seasons as a member of Conference USA.

Preseason Sun Belt Conference poll
The Thundering Herd were picked to finish in seventh place in the conference's preseason poll. Senior guard Kamdyn Curfman and senior forward Obinna Anochili-Killen were named to the preseason All-SBC Second Team.

Schedule and results
!colspan=12 style=| Exhibition

!colspan=12 style=| Non-Conference Regular season

!colspan=9 style=| Sun Belt Conference regular season

!colspan=9 style=| Sun Belt Conference Tournament