The 1998–99 QMJHL season was the 30th season in the history of the Quebec Major Junior Hockey League (QMJHL). The league continued its trend of teams relocating into the Atlantic Canada market, when Laval moved to Bathurst, New Brunswick. Fifteen teams played seventy games each in the schedule. The Quebec Remparts repeated as first overall in the regular season winning their second consecutive Jean Rougeau Trophy. The Acadie-Bathurst Titan won the President's Cup, defeating the Hull Olympiques in the finals.

Team changes

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 = Penalty minutes

Playoffs

Mathieu Benoît was the leading scorer of the playoffs with 41 points (20 goals, 21 assists).

All-star teams

Trophies and awards