Usuda, Nagano

 was a town located in Minamisaku District, Nagano Prefecture, Japan. It is the farthest point in the country away from the sea, although the nearby town of Saku claims to hold this distinction as well.
As of 2003, the town has an estimated population of 15,731 and a density of 189.05 persons per km². The total area is 83.21 km².