The 2017–18 Marshall Thundering Herd men's basketball team represented the Marshall University during the 2017–18 NCAA Division I men's basketball season.

The Thundering Herd, led by fourth-year head coach Dan D'Antoni, played their home games at the Cam Henderson Center as members of Conference USA.

They defeated UTSA, Southern Miss, and Western Kentucky to become champions of the C-USA tournament.

They received C-USA's automatic bid to the NCAA tournament where, as a No.

They defeated Florida Atlantic, Old Dominion, and Louisiana Tech to advance to the championship game of the C-USA tournament.