was a district located in Okayama Prefecture, Japan.
As of 2003, the district had an estimated population of 39,365 and a density of 313.64 persons per km<sup>2</sup>. The total area was 125.51 km<sup>2</sup>.
Towns and villages
- Oku
- Osafune
- Ushimado
Merger
- On November 1, 2004 - the towns of Oku, Osafune and Ushimado were merged to create the city of Setouchi.