Bearskin Lake is an oligotrophic glacial lake near the Boundary Waters Canoe Area (BWCA) in Minnesota, United States.

The name Bearskin Lake is an English translation of the Ojibwe-language name Muko-waiani.

Bearskin Lake is home to Camp Menogyn, a YMCA camp only accessible by boat.

[citation needed] Due to the cleanliness of the lake and the physical attributes of its sediment, Bearskin Lake sediment is ideal for sediment toxicity testing.

[2] Bearskin Lake sediment is used as a control sediment in the federal government's toxicity tests and was used to develop the US EPA's toxicity testing methods.