2017-18 Ligue de Hockey Senior du Lac-au-Fleuve season

This is the 2017-18 Ligue de Hockey Senior du Lac-au-Fleuve season. This is the league's first season.

Semifinals

 * Charlevoix Eclair defeated Jonquière MGR Express 4 games to 1
 * Dolbeau-Mistassini Multiconcessionnaire defeated Haute-Côte-Nord Escavation A Savard 4 games to 2

Final

 * Charlevoix Eclair defeated Dolbeau-Mistassini Multiconcessionnaire 4 games to 3