The 1999–2000 QMJHL season was the 31st season in the history of the Quebec Major Junior Hockey League. The league granted the Montreal Rocket an expansion franchise, returning a team to the most populous city in Quebec. The QMJHL split into four divisions, retaining the names Lebel and Dilio for its conferences. The Lebel conference was split into the West and Central divisions, and the Dilio Conference was split into the East and Maritime divisions.