The 1989 NCAA Division I Men's Ice Hockey Tournament was the culmination of the NCAA Division I men's ice hockey season, the 42nd such tournament in NCAA history. It was held between March 17 and April 1, 1989, and concluded with Harvard defeating Minnesota 4 to 3 in overtime. All First Round and Quarterfinals matchups were held at home team venues with the 'Frozen Four' games being played at the St. Paul Civic Center in St. Paul, Minnesota. In the first round the third and sixth seeds and the fourth and fifth seeds played best-of-three series to determine which school advanced to the Quarterfinals with the winners of the 4 vs. 5 series playing the first seed and the winner of the 3 vs. 6 series playing the second seed. In the Quarterfinals the matches were best-of-three series once more with the victors advancing to the National Semifinals. The semi finals and finals were single game elimination format.