Hiraya (平谷村, Hiraya-mura) is a village located in Nagano Prefecture, Japan.

The total area of the village is 77.37 square kilometres (29.87 sq mi).

Hiraya is at an average altitude of 900 meters, and contains Mount Ōkawairi and the source of the Yahagi River.

[2] Per Japanese census data,[3] the population of Hiraya has declined by more than two-thirds over the past 80 years.

The economy of Hiraya is based on tourism to its ski and hot spring resorts.