The 1977–78 Montana Grizzlies basketball team represented the University of Montana during the 1977–78 NCAA Division I basketball season. Charter members of the Big Sky Conference, the Grizzlies were led by second-year head coach Jim Brandenburg and played their home games on campus at Adams Field House in Missoula, Montana.
They finished the regular season at 19–7, with a 12–2 record in conference to win the title and host the four-team Big Sky tournament.[1][2] The Grizzlies defeated fourth-seed Boise State in the semifinal,[3][4] then were upset by third-seed Weber State in the final in overtime.[5][6] Montana had swept the season series with Weber.
The Grizzlies were led on the court by senior guard Micheal Ray Richardson,[7] on the all-conference team for a third consecutive year; junior forward Allan Nielsen was on the second team.[8][9] An honorable mention All-American, Richardson was the fourth overall selection of the 1978 NBA draft and a four-time NBA All-Star.