was a town located in Ōno District, Ōita Prefecture, Japan.
Population
As of 2003, the town had an estimated population of 9,309 and the density of 66.88 persons per km<sup>2</sup>. The total area was 139.19 km<sup>2</sup>.
Merge
On January 1, 2005, Notsu was merged into the expanded city of Usuki.