Lake Gunn

Infobox lake
lake_name = Lake Gunn
image_lake = Lake_gunn.jpg
caption_lake = in the morning
image_bathymetry =
caption_bathymetry =
location = South Island
coords = coord|44|53|S|168|05|E|type:waterbody_region:NZ|display=inline,title
type =
inflow = west branch of the Eglinton River
outflow = west branch of the Eglinton River
catchment =
basin_countries = New Zealand
length = 4 km
width =
area = 6 km²
depth =
max-depth =
volume =
residence_time =
shore =
elevation = 480 m
islands =
cities =

Lake Gunn is a lake in the South Island of New Zealand, located at coord|44|53|S|168|05|E|type:waterbody_region:NZ.

A small lake between Lake Te Anau and Milford Sound, it lies close to the State Highway 94 (the Milford Sound Road). The small tramping camp of Cascade Creek lies close to the lake's southern end. The west branch of the Eglinton River flows through the lake.

The lake is within the boundary of the Fiordland National Park, and is surrounded by native bush. Several smaller lakes lie nearby, including Lake Fergus and Lake McKellar. Several mountains stand close to the lake's western shore, notably Melita Peak (1680 m) and Consolation Peak (1760 m). "The Divide", the saddle between the valleys of the Eglinton and Hollyford Rivers, lies four kilometres north of the lake.

The lake (and several other nearby locations) were named after Davy Gunn, a pioneer of the local tramping tourism industry (see Hollyford Track).