thumb|250px|Nishiusuki District in Miyazaki Prefecture
is a district located in Miyazaki Prefecture, Japan.
As of October 2020, the district has an estimated population of 18,749 and the density of 27.29 persons per km<sup>2</sup>. The total area is 686.94 km<sup>2</sup>.
Towns and villages
- Gokase
- Hinokage
- Takachiho