Aya is a town located in Higashimorokata District, Miyazaki Prefecture, Japan. As of 1 October 2023, the town had an estimated population of 6,713 in 2861 households, and a population density of 71 persons per km2. The total area of the town is 95.19 square kilometres (36.75 sq mi).

Miyazaki Prefecture is a prefecture of Japan located on the island of Kyūshū. Miyazaki Prefecture has a population of 1,073,054 as of 1 June 2019 and has a geographic area of 7,735 km2. Miyazaki Prefecture borders Ōita Prefecture to the north, Kumamoto Prefecture to the northwest, and Kagoshima Prefecture to the southwest.