is a town located in Tochigi Prefecture, Japan. , the town had an estimated population of 10,906 in 4028 households, and a population density of 62 persons per km<sup>2</sup>. The total area of the town is .
Shioya is located in central Tochigi Prefecture.
Shioya has a Humid subtropical climate (Köppen Cfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Shioya is . The average annual rainfall is with July as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around .
Per Japanese census data, the population of Shioya has declined over the past 70 years.
The villages of Tamanyu, Funyu, and Omiya were created within Shioya District of Tochigi Prefecture on April 1, 1889, with the creation of the modern municipalities system after the Meiji Restoration. The three villages merged on March 31, 1957, to create the village of Shioya. Shioya was elevated to town status on February 11, 1965.
Shioya has a mayor-council form of government with a directly elected mayor and a unicameral town council of 12 members. Shioya, together with the city of Sakura and town of Takanezawa collectively contributes two members to the Tochigi Prefectural Assembly. In terms of national politics, the town is part of Tochigi 2nd district of the lower house of the Diet of Japan.
The economy of Shioya is heavily dependent on agriculture, but is increasingly a bedroom community for the nearby cities of Utsunomiya and Nikkà Â.
Shioya has three public primary schools, one public middle school operated by the town government, and one public high school operated by the Tochigi Prefectural Board of Education.