Miyoshi is a city located in Hiroshima Prefecture, Japan. As of 31 March 2023, the city had an estimated population of 49,106 in 23154 households and a population density of 63 persons per km². The total area of the city is 778.14 square kilometres (300.44 sq mi).

Hiroshima Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 and has a geographic area of 8,479 km². Hiroshima Prefecture borders Okayama Prefecture to the east, Tottori Prefecture to the northeast, Shimane Prefecture to the north, and Yamaguchi Prefecture to the southwest.