Kamioka (神岡町 Kamioka-machi) was a town located in Senboku District, Akita, Japan.
On March 22, 2005, the town was merged with the city of Ōmagari; the towns Nishisenboku, Nakasen, Kyōwa, Semboku, Ōta; and the village of Nangai, all from Semboku District to form the new city of Daisen.
In 2003, the town had an estimated population of 5,943 and a density of 169.03 persons per km². The total area was 35.16 km².