Kiso (木曽町, Kiso-machi) is a town located in Nagano Prefecture, Japan. As of 5 April 2019, the town had an estimated population of 11,045 in 4892 households , and a population density of 23 persons per km². The total area of the town is 476.03 square kilometres (183.80 sq mi). Kiso Town is listed as one of The Most Beautiful Villages in Japan.