Mässersee
| Mässersee | |
|---|---|
 Mässersee Binntal | |
  Mässersee  Mässersee  Mässersee  Mässersee  Mässersee | |
| Location | Binntal, Valais |
| Coordinates | 46°21′17″N 8°13′37″E / 46.354861°N 8.226944°E |
| Primary outflows | Binna |
| Basin countries | Switzerland |
| Surface elevation | 2,130 m (6,990 ft) |
Mässersee is the smallest of four mountain lakes in the upper Binntal (Binn valley) of the canton of Valais, Switzerland.