Pillersee is a lake in the Northern Limestone Alps in Tyrol, Austria.^[1]

Pillersee
The Pillersee
Pillersee
Location	Northern Limestone Alps, Tyrol, Austria
Coordinates	47°32′19″N 12°34′07″E / 47.53861°N 12.56861°E / 47.53861; 12.56861
Type	lake
Surface area	24.3 hectares (60 acres)
Max. depth	7 metres (23 ft)

The Pillersee is in the Pillerseevalley near the village of Sankt Ulrich am Pillersee at 835 m above sea level. It occupies an area of 24.3 hectares (60 acres). Inflows are several streams that originate in the adjacent Lofer Steinberg mountains and the Kitzbühel Alps. The outlet of the lake is made by the Haselbach and Grieselbach, the depth of the lake is at its lowest point 7 metres (23 ft). It is surrounded with mountains and can be swam in.

The origin to the Pillersee is a landslide about 15,000 years ago, which interrupted the outflow of Öfenschlucht canyon and so dammed the Pillersee.