The 2019–20 Montana Grizzlies basketball team represented the University of Montana during the 2019–20 NCAA Division I men's basketball season.

The Grizzlies, led by sixth-year head coach Travis DeCuire, played their home games at Dahlberg Arena in Missoula, Montana as members of the Big Sky Conference.

The Grizzlies finished the 2018–19 season 26–9 overall, 16–4 in Big Sky play, the Grizzlies won the Big Sky regular season championship.

1 seed in the Big Sky tournament, they defeated Sacramento State, Weber State, and Eastern Washington to win the tournament, and earned the Big Sky's automatic bid to the NCAA tournament.

15 seed in the West Region of the NCAA Tournament, Montana was defeated by Michigan in the first round for the second consecutive year.