The regular season, which consisted of eighteen teams playing 68 games each, began on September 10, 2009, and ended on March 14, 2010.
The 2009–10 QMJHL season marked the first time that an all-Maritime Provinces Championship series occurred in the 41-year history of the league.
Note: GP = Games played; W = Wins; L = Losses; OTL = Overtime losses ; SL - Shootout losses ; GF = Goals for ; GA = Goals against; Pts = Points Note: GP = Games played; W = Wins; L = Losses; OTL = Overtime losses ; SL - Shootout losses ; GF = Goals for ; GA = Goals against; Pts = Points R - Regular Season Champions Z - team has clinched division X - team clinched QMJHL Playoff spot O - team DID NOT make Playoffs Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalty minutes Note: GP = Games played; TOI = Total ice time; W = Wins; L = Losses ; GA = Goals against; SO = Total shutouts; SV% = Save percentage; GAA = Goals against average In total, 21 QMJHL players were selected at the 2009 NHL Entry Draft.
The Subway Super Series (formerly known as ADT Canada Russia Challenge) is a six-game series featuring four teams: three from the Canadian Hockey League (CHL) versus Russia's National Junior hockey team.
Former Montreal Canadiens players, Guy Carbonneau and Guy Lafleur were named Honorary Captains for the first two games of the series, which was held in Drummondville on November 16, 2009, and Shawinigan on November 18, 2009.