The 1969–70 QMJHL season was the first season in the history of the Quebec Major Junior Hockey League. Eleven teams formed the new league, ten from Quebec and one from Ontario. Eight teams came from the Quebec Junior Hockey League, the Drummondville Rangers, Quebec Remparts, Saint-Jérôme Alouettes, Shawinigan Bruins, Sherbrooke Castors, Sorel Éperviers, Trois-Rivières Ducs and Verdun Maple Leafs; two from the Metropolitan Montreal Junior Hockey League, the Rosemont National and Laval Saints; and the Cornwall Royals from the Central Junior A Hockey League. The teams played 56 games each in the schedule. The Quebec Remparts finished first place in the regular season, and won the President's Cup, defeating the Saint-Jérôme Alouettes in the finals. The Remparts then defeated the P.E.I. Islanders from the Maritimes, then competed for the George Richardson Memorial Trophy, losing to the Montreal Junior Canadiens 3 games to 0 for the Eastern Canada title.

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

Guy Lafleur was the leading scorer of the playoffs with 43 points (25 goals, 18 assists).

All-star teams

Trophies and awards