Yngern is a lake in Stockholm County, Södermanland, Sweden. A small part of the lake lies in Södermanland County.

Yngern
View of lake
Location of Yngern in Sweden.
Location of Yngern in Sweden.
Yngern
Coordinates59°09′40″N 17°23′00″E / 59.16111°N 17.38333°E / 59.16111; 17.38333
Basin countriesSweden