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.
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