The 1986–87 QMJHL season was the 18th season in the history of the Quebec Major Junior Hockey League. Ten teams played 70 games each in the schedule. The two last place teams from previous season both won their divisions. The Granby Bisons finished first overall in the regular season, winning their first Jean Rougeau Trophy since relocating from Sorel, Quebec. The Longueuil Chevaliers won their first President's Cup, defeating the Chicoutimi Saguenéens in the finals.

Final standings

Note: GP = Games played; W = Wins; L = Losses; T = Ties; Pts = Points; GF = Goals for; GA = Goals against

Scoring leaders

Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalties in Minutes

Playoffs

Marc Fortier was the leading scorer of the playoffs with 44 points (17 goals, 27 assists). Note: GP = Games played; W = Wins; L = Losses; PTS = Points; GF = Goals For; GA = Goals Against

All-star teams

Trophies and awards