The 2017–18 UNLV Runnin' Rebels basketball team represented the University of Nevada, Las Vegas during the 2017–18 NCAA Division I men's basketball season. The Runnin' Rebels were led by second-year head coach Marvin Menzies and played their home games at the Thomas & Mack Center in Paradise, Nevada as members of the Mountain West Conference. They finished the season 20–13, 8–10 in Mountain West play to finish in a tie for seventh place. They defeated Air Force in the first round of the Mountain West tournament before losing in the quarterfinals to Nevada. Despite having 20 wins, they did not participate in a postseason tournament after declining an invite to the CBI Tournament.