The 2019–20 Marshall Thundering Herd men's basketball team represented Marshall University during the 2019–20 NCAA Division I men's basketball season. The Thundering Herd, led by sixth-year head coach Dan D'Antoni, played their home games at the Cam Henderson Center as members of Conference USA. They finished the season 17–15, 10–8 in C-USA play to finish in sixth place. They defeated UTEP and were scheduled to play Louisiana Tech in the quarterfinals of the C-USA tournament. However, the tournament canceled due to the coronavirus pandemic.
Previous season
The Thundering Herd finished the 2018–19 season 23–14, 11–7 in C-USA play to finish in sixth place. They defeated Rice before losing to Southern Miss in the quarterfinals of the C-USA tournament. They were invited to the CollegeInsider.com Tournament where they defeated IUPUI, Presbyterian, Hampton and Green Bay to become CIT champions.