Lake Tanuki (田貫湖, Tanuki-ko) is a lake near Mount Fuji, Japan. It is located in the city of Fujinomiya, Shizuoka Prefecture, and is part of the Fuji-Hakone-Izu National Park.

Originally a swampy area, the lake was created in 1935 by diverting the waters of nearby Shiba River to create a reservoir for use in irrigation. The lake is now a popular vacation location, with camp sites, fishing, boating and is noted for its views of Mount Fuji.

• Media related to Lake Tanuki at Wikimedia Commons
• Fujinomiya home page Archived 2009-09-25 at the Wayback Machine
• Ministry of the Environment home page