2009–10 Swiss Super League
The 2009–10 Swiss Super League is the 113th season of top-tier football in Switzerland. The competition is officially named AXPO Super League due to sponsoring purposes. It began on 11 July 2009 and has ended in May 2010. FC Zürich were the defending champions. The title was won by FC Basel.
Promotion and relegation
side FC Vaduz were relegated after finishing in 10th and last place in 2008–09 Swiss Super League. They were replaced by Challenge League 2008–09 champions FC St. Gallen.9th-placed FC Luzern and Challenge League runners-up FC Lugano competed in a two-legged relegation play-off after the end of the 2008–09 season. Lucerne won 5–1 aggregate and thus remained in Super League.
Stadia and locations
| Club | Location | Stadium | Capacity |
| Aarau | Stadion Brügglifeld | 9,249 | |
| Basel | St. Jakob-Park | 42,500 | |
| Bellinzona | Stadio Comunale Bellinzona | 8,740 | |
| Zürich | Letzigrund | 23,605 | |
| Luzern | Stadion Allmend | 13,000 | |
| Neuchâtel | Stade de la Maladière | 12,000 | |
| Sion | Stade Tourbillon | 16,500 | |
| St. Gallen | AFG Arena | 19,694 | |
| Berne | Wankdorf | 31,783 | |
| Zürich | Letzigrund | 23,605 |
League table
Relegation play-offs
as 9th-placed team of the Super League played a two-legged play-off against Challenge League runners-up AC Lugano.----