The 2017–18 LNAH season was the 22nd season of the Ligue Nord-Américaine de Hockey (before 2004 the Quebec Semi-Pro Hockey League), a minor professional league in the Canadian province of Quebec.
Six teams participated in the regular season, which was won by the Sorel-Tracy Eperviers.
Sorel-Tracy Eperviers also won the playoff championship.
The two highest seeded quarterfinal losers advances to a repechage (2nd chance round) which is best-of-three.
The winner of that series advances to the semifinals.