Usu District, Hokkaido

Usu (有珠郡; -gun) is a district located in Iburi Subprefecture, Hokkaido, Japan.

As of 2004, the district has an estimated population of 5,731 and a density of 11.96 persons per km². The total area is 479.07 km².

Towns and villages

• Otaki
• Soubetsu