Ōhara Station is a passenger railway station located in the city of Mimasaka, Okayama Prefecture, Japan. It is operated by the third-sector semi-public railway operator Chizu Express.

Mimasaka is a city located in Okayama Prefecture, Japan. As of 31 January 2023, the city had an estimated population of 25,946 in 12287 households and a population density of 60 persons per km2. The total area of the city is 429.29 square kilometres (165.75 sq mi).