There are 16 lakes in Switzerland with a surface area larger than 10 km²:

Lake Geneva (Lac Léman, Lac de Genève) - 581.3 km² (shared with France)

Lake Constance (Bodensee) - 541.1 km² (shared with Germany/Austria)

Lake Neuchâtel (Lac de Neuchâtel, Neuenburgersee) - 218.3 km²

Lake Maggiore (Lago Maggiore) - 212.3 km² (mainly in Italy)

Lake Lucerne (Vierwaldstättersee) - 113.7 km²

Lake Zurich (Zürichsee) - 90.1 km²

Lake Lugano (Lago di Lugano, Ceresio) - 48.7 km² (partially in Italy)

Lake Thun (Thunersee) - 48.4 km²

Lake Biel (Lac de Bienne, Bielersee) - 39.6 km²

Lake Zug (Zugersee) - 38.3 km²

Lake Brienz (Brienzersee) - 29.8 km²

Lake Walen (or Walensee, Lake Walenstadt) - 24.1 km²

Lake Murten (Lac Morat, Murtensee) - 23.0 km²

Lake Sempach (Sempachersee) - 14.36 km²

Sihlsee (Sihlsee) - 10.72 km²

Lake Hallwil (Hallwilersee) - 10.21 km²