Irrsee

Infobox_lake
lake_name = Irrsee
image_lake = Irrsee.jpg
caption_lake =
image_bathymetry =
caption_bathymetry =
location = Salzkammergut
coords = coord|47|54|44|N|13|18|25|E|region:AT_type:waterbody|display=inline,title
type =
inflow =
outflow =
catchment =
basin_countries = Austria
length = 4.4 km
width = 1 km
area = 3.5 km²
depth =
max-depth = 32 m
volume =
residence_time =
shore =
elevation = 553 m
islands =
cities = Zell am Moos

Irrsee is a lake in the Salzkammergut, Austria, located at coord|47|54|44|N|13|18|25|E|region:AT_type:waterbody. Its surface is approximately 3.5 km² and its maximum depth is 32 metres. It is a popular tourist destination, also thanks to the warmest water temperature of all lakes in Salzkammergut.