Shioya (塩谷郡 Shioya-gun) is a district located in Tochigi, Japan.
As of 2003, the district has an estimated population of 57,656 and a density of 60.91 persons per square kilometer. The total area is 946.53 km².
Towns and villages 
- On March 28, 2005 the towns of Kitsuregawa and Ujiie merged to form the city of Sakura.
- On March 20, 2006 the town of Fujihara and the village of Kuriyama merged into the city of Nikkō. With this merger, there are no more villages left within Tochigi Prefecture.
Coordinates: 36°46′37″N 139°49′41″E / 36.777°N 139.828°E