Agematsu (上松町, Agematsu-machi) is a town located in Nagano Prefecture, Japan.

The total area of the town is 168.42 square kilometres (65.03 sq mi).

[2] Per Japanese census data,[3] the population of Agematsu has been declining steady over the past 60 years.

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

The Institute for Space–Earth Environmental Research of Nagoya University is located in Agematsu.