is a district located in Shimane Prefecture, Japan.
As of 2003, the district has an estimated population of 17,879 and a density of . The total area is .
Towns and villages Tsuwano Yoshika
Mergers On September 25, 2005, the town of Nichihara merged into the town of Tsuwano. On October 1, 2005, the town of Muikaichi and the village of Kakinoki merged to form the new town of Yoshika.
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