The 1983–84 QMJHL season was the 15th season in the history of the Quebec Major Junior Hockey League. Eleven teams played 70 games each in the regular season.
Mario Lemieux of the Laval Voisins scores 133 goals, and has 149 assists, setting the all-time Canadian Hockey League record of 282 points, and 133 goals in a regular season. His total of 149 assists ranks second only to Pierre Larouche's total of 157 from the 1973–74 QMJHL season. Lemieux also won four QMHL trophies at the season's end, as well as the CHL Player of the Year award.
The Laval Voisins repeated as first overall in the regular season, winning the Jean Rougeau Trophy, and won their first President's Cup, defeating the Longueuil Chevaliers in the finals.
Final standings
Note: GP = Games played; W = Wins; L = Losses; T = Ties; Pts = Points; GF = Goals for; GA = Goals against
complete list of standings.
Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalties in Minutes
complete scoring statistics
Mario Lemieux was the leading scorer of the playoffs with 52 points (29 goals, 23 assists).
Quarterfinals
Laval Voisins defeated Granby Bisons 4 games to 0.
Verdun Juniors defeated Saint-Jean Castors 4 games to 0.
Drummondville Voltigeurs defeated Shawinigan Cataractes 4 games to 2.
Longueuil Chevaliers defeated Quebec Remparts 4 games to 1.
Semifinals
Laval Voisins defeated Drummondville Voltigeurs 4 games to 0.
Longueuil Chevaliers defeated Verdun Juniors 4 games to 2.
Finals
Laval Voisins defeated Longueuil Chevaliers 4 games to 2.
First team
Goaltender - Alain Raymond, Trois-Rivières Draveurs
Left defence - Steven Finn, Laval Voisins
Right defence - Billy Campbell, Verdun Juniors
Left winger - Claude Gosselin, Quebec Remparts
Centreman - Mario Lemieux, Laval Voisins
Right winger - Jacques Goyette, Laval Voisins
Coach - Pierre Creamer, Verdun Juniors
Second team
Goaltender - Luc Guenette, Quebec Remparts
Left defence - Jerome Carrier, Verdun Juniors
Right defence - Sylvain Cote, Quebec Remparts
Left winger - Yves Courteau, Laval Voisins
Centreman - Claude Lebebvre, Quebec Remparts
Right winger - Claude Lemieux, Verdun Juniors
Coach - Jean Begin, Laval Voisins
List of First/Second/Rookie team all-stars
Trophies and awards
Team
President's Cup - Playoff Champions, Laval Voisins
Jean Rougeau Trophy - Regular Season Champions, Laval Voisins
Robert Lebel Trophy - Team with best GAA, Shawinigan Cataractes
Player
Michel Brière Memorial Trophy - Most Valuable Player, Mario Lemieux, Laval Voisins
Jean Béliveau Trophy - Top Scorer, Mario Lemieux, Laval Voisins
Guy Lafleur Trophy - Playoff MVP, Mario Lemieux, Laval Voisins
Jacques Plante Memorial Trophy - Best GAA, Tony Haladuick, Laval Voisins
Emile Bouchard Trophy - Defenceman of the Year, Billy Campbell, Verdun Juniors
Mike Bossy Trophy - Best Pro Prospect, Mario Lemieux, Laval Voisins
Michel Bergeron Trophy - Offensive Rookie of the Year, Stephane Richer, Granby Bisons
Raymond Lagacé Trophy - Defensive Rookie of the Year, James Gasseau, Drummondville Voltigeurs
Frank J. Selke Memorial Trophy - Most sportsmanlike player, Jerome Carrier, Verdun Juniors
Marcel Robert Trophy - Best Scholastic Player, Gilbert Paiement, Chicoutimi Saguenéens
