The 2017–18 Swiss Super League (referred to as the Raiffeisen Super League for sponsoring reasons) was the 121th season of top-tier competitive football in Switzerland and the 15th under its current name and format. Basel are the defending champions.
A total of 10 teams compete in the league: the 9 best teams from the 2016–17 season and the 2016–17 Swiss Challenge League champion Zürich. The season is scheduled to start on the weekend of 22-23 July 2017 and end on 19 May 2018.
This season seen the introduction of changes in the way Swiss clubs may qualify for European competition; per new UEFA rules, the winner of the Swiss Super League now qualifies for the Champions League play-off round (previously directly to the Champions League group stage) and the runner-up now qualifies for the Champions league second qualifying round (previously to the third qualifying round). Qualification to Europa League spots for the third- and fourth-placed team remain unchanged.
Source: BBC Rules for classification:1st points; 2nd goal difference; 3rd number of goals scored. (C) = Champion; (R) = Relegated; (P) = Promoted; (O) = Play-off winner; (A) = Advances to a further round; (Q) = Qualified to the phase of tournament