Tenryū (天龍村, Tenryū-mura) is a village located in Nagano Prefecture, Japan.

The total area of the village is 109.44 square kilometres (42.26 sq mi).

The Tenryū River runs through the village, which is over 90% covered in mountains and forest.

[2] Per Japanese census data,[3] the population of Tenryū has dropped rapidly over the past 70 years.

The area of present-day Tenryū was part of ancient Shinano Province.