thumb|Location of Kumage District in Yamaguchi Prefecture
is a district located in Yamaguchi Prefecture, Japan.
As of 2003, the district has an estimated population of 42,778 and a density of 282.12 persons per km<sup>2</sup>. The total area is 151.63 km<sup>2</sup>.
Towns and villages
- Hirao
- Kaminoseki
- Tabuse
Mergers
- On April 21, 2003, the town of Kumage merged with the town of Kano, from Tsuno District, and the cities of Tokuyama and Shinnan'yō, to form the city of Shūnan.
- On October 4, 2004, the town of Yamato was merged into the city of Hikari.