| Vallülasee | |
| Location: | Vorarlberg |
| Coords: | 46.9486°N 10.1197°W |
| Type: | mountain lake |
| Inflow: | Vallülabach |
| Outflow: | Vallülabach |
| Pushpin Map: | Austria Vorarlberg |
| Basin Countries: | Austria |
| Length: | 200m (700feet) |
| Width: | 200m (700feet) |
| Area: | ca. 4ha |
| Elevation: | 2500m (8,200feet) |
Lake Vallüla (German Vallülasee) is a mountain lake located in Montafon, Austria. This secluded area on Mount Vallüla can only be reached on foot due to its high elevation and rough terrain. The climb takes approximately 5 hours.
The mountain lake possesses clear, chilly drinking water. The Vallülabach (length: ~ 5 km) feeds and drains the lake and merges with the river Ill. Fishes such as trout can be found in the water.