The 2017–18 Lamar Cardinals basketball team represented Lamar University during the 2017–18 NCAA Division I men's basketball season. The Cardinals were led by fourth-year head coach Tic Price and played their home games at the Montagne Center in Beaumont, Texas as members of the Southland Conference. They finished the season 19–14, 11–7 in Southland play to finish in a tie for fifth place. They lost in the first round of the Southland tournament to Central Arkansas. They were invited to the CollegeInsider.com Tournament where they lost in the first round to UTSA.