Wichelsee

Infobox lake
lake_name = Wichelsee
image_lake =
caption_lake =
image_bathymetry =
caption_bathymetry =
location = Obwalden
coords = coord|46|55|10|N|8|16|21|E|region:CH-OW_type:waterbody|display=inline,title
type = reservoir
inflow =
outflow =
catchment =
basin_countries = Switzerland
length =
width =
area = 0.22 km²
depth =
max-depth =
volume = 0.4 mio m³
residence_time =
shore =
elevation = 459 m
islands =
cities =
frozen =

Wichelsee is a lake in Obwalden, Switzerland. Its surface area is 0.22 km². The reservoir is located in the municipalities of Alpnach and Sarnen. It formed after the Sarner Aa was damed in 1955. The area around the lake was protected in 2005.