The 2017–18 Montana Grizzlies basketball team represented the University of Montana during the 2017–18 NCAA Division I men's basketball season. The Grizzlies, led by fourth-year head coach Travis DeCuire, played their home games at Dahlberg Arena in Missoula, Montana as members of the Big Sky Conference. They finished the season 26–8, 16–2 in Big Sky play to win the Big Sky regular season championship. They defeated North Dakota, Northern Colorado, and Eastern Washington to be champions of the Big Sky tournament. They earned the Big Sky's automatic bid to the NCAA tournament where they lost in the first round to Michigan.