The Longueuil Chevaliers ("Cavaliers") were a junior ice hockey team in the Quebec Major Junior Hockey League, playing in Longueuil, Quebec at Colisée Jean Béliveau. They were founded in 1982 and set a Canadian Hockey League record for the most successful season ever by an expansion franchise, going 37-29-4 under the coaching of Jacques Lemaire. Longueuil reached the league finals for the President's Cup in both of their first two seasons. The Chevaliers finished runners-up both times losing to greater Montreal rival teams, the Verdun Juniors in 1983, and the Laval Voisins in 1984.