The Kan-Etsu Tunnel (関越トンネル, Kan'etsu Tonneru) is a tunnel on the Kan-Etsu Expressway in Japan that runs through Mt.

Tanigawa from Minakami, Gumma to Yuzawa, Niigata.

The northern tube was opened in 1985 and the southern tube was opened in 1991.

[1] The older one is used as a tunnel towards Niigata and the younger is towards to Gumma.