| Competition: | 1. Liga |
| Season: | 2011–12 |
| Winners: | Group 1: Sion U-21 Group 2: BSC Old Boys Group 3: FC Tuggen |
| Promoted: | Clubs FC Fribourg Yverdon-Sport FC BSC Old Boys FC Breitenrain Bern FC Tuggen Schaffhausen SC Young Fellows Juventus Youth teams Sion U-21 Zürich U-21 Basel U-21 St. Gallen U-21 |
| Matches: | 720 |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
The 2011–12 Swiss 1. Liga was the final season of this league as the third highest tier in the Swiss football league system. From next season it would become the fourth highest tier. The 1. Liga is and remains the highest tier in Swiss amateur football, but many teams at that time had professional or semi-professional players.
The 1. Liga in the 2011–12 season was divided into three regional groups, each with 16 teams. Within each group, the teams would play a double round-robin to decide their positions in the league. Due to the creation of the 1. Liga Promotion that was due to commence the following year, this season would see the number of teams in the groups reduced from 16 to 14 and it would be renamed as 1. Liga Classic. The new Promotion League would serve as the semi-professional link to amateur football. Six clubs could achieve promotion to the new third division, if they had applied for the semi-professional status. Due to the bankruptcy of Xamax in January 2012 it resulted that seven clubs were promoted. The four best U-21 teams would receive a wild card and advance as well. This reconstruction was done to decrease the competitive gap between the professional two top tiers and the amateur leagues.[1] [2]
| Club | Canton | Stadium | Capacity |
|---|---|---|---|
| FC Baulmes | Vaud | Stade Sous-Ville | |
| FC Bulle | Fribourg | Stade de Bouleyres | |
| SC Düdingen | Fribourg | Stadion Birchhölzli | |
| FC Echallens | Vaud | Sportplatz 3 Sapins | |
| FC Fribourg | Fribourg | Stade Universitaire | |
| Grand-Lancy FC | Geneva | Stade de Marignac | |
| FC Le Mont | Vaud | Centre Sportif du Châtaignier | |
| ES FC Malley | Vaud | Centre Sportif de la Tuilière | |
| FC Martigny-Sports | Valais | Stade d'Octodure | |
| FC Meyrin | Geneva | Stade des Arbères | |
| FC Monthey | Valais | Stade Philippe Pottier | |
| FC Naters | Valais | Sportanlage Stapfen | |
| Sion U-21 | Valais | Stade de Tourbillon | |
| Urania Genève Sport | Geneva | Stade de Frontenex | |
| Young Boys U-21 | Bern | Stadion Wankdorf or Allmend Bern | |
| Yverdon-Sport FC | Vaud | Stade Municipal | |
| Club | Canton | Stadium | Capacity |
|---|---|---|---|
| FC Baden | Aargau | Esp Stadium | |
| Basel U-21 | Basel-City | Stadion Rankhof or Youth Campus Basel | |
| FC Breitenrain Bern | Bern | Spitalacker | |
| SC Dornach | Solothurn | Gigersloch | |
| Grasshopper Club U-21 | Zürich | GC/Campus Niederhasli | |
| FC Grenchen | Solothurn | Stadium Brühl | |
| FC Münsingen | Bern | Sportanlage Sandreutenen | |
| SV Muttenz | Basel-Country | Sportplatz Margelacker | |
| BSC Old Boys | Basel-City | Stadion Schützenmatte | |
| FC Schötz | Lucerne | Sportplatz Wissenhusen | |
| FC Serrières | Neuchâtel | Pierre-à-Bot | |
| FC Solothurn | Solothurn | Stadion FC Solothurn | |
| Thun U-21 | Bern | Stadion Lachen | |
| FC Wangen bei Olten | Solothurn | Sportplatz Chrüzmatt | |
| SC Zofingen | Aargau | Sportanlagen Trinermatten | |
| Zürich U-21 | Zürich | Sportplatz Heerenschürli | |
| Club | Canton | Stadium | Capacity |
|---|---|---|---|
| FC Balzers |  | Sportplatz Rheinau | |
| GC Biaschesi | Ticino | Campo Sportivo "Al Vallone" | |
| SC Cham | Zug | Stadion Eizmoos | |
| USV Eschen/Mauren | | Sportpark Eschen-Mauren | |
| FC Gossau | St. Gallen | Sportanlage Buechenwald | |
| SV Höngg | Zürich | Hönggerberg | |
| Lugano U-21 | Ticino | Cornaredo Stadium | |
| Luzern U-21 | Lucerne | Swissporarena or Allmend Süd | |
| FC Mendrisio | Ticino | Centro Sportivo Comunale | |
| FC Muri[3] | Aargau | Stadion Brühl | |
| Rapperswil-Jona | St. Gallen | Stadion Grünfeld | |
| FC Schaffhausen | Schaffhausen | Stadion Breite | |
| St. Gallen U-21 | St. Gallen | Espenmoos or Kybunpark | |
| FC Tuggen | Schwyz | Linthstrasse | |
| Winterthur U-21 | Zürich | Schützenwieseor Schützenwiese Sportplätze | |
| SC YF Juventus | Zürich | Utogrund | |