The 2017–18 SHL season was the 43rd season of the Swedish Hockey League (SHL). The season began in September 2017, and the regular season ended in March 2018, to be followed by the Swedish Championship playoffs, as well as relegation playoffs. The league consisted of 14 teams. The only new addition for this season was Mora IK, who replaced Leksands IF after defeating them in the 2017 SHL qualifiers.