is a passenger railway station located in Tà Âjà Â-chà Â, in the city of Shà Âbara, Hiroshima Prefecture, Japan. It is operated by the West Japan Railway Company (JR West).
Onuka Station is served by the Geibi Line, and is located 33.6 kilometers from the terminus of the line at and 40.0 kilometers from .
The station consists of one ground-level side platform serving a single bi-directional track. Originally, it was a station with two opposite side platforms and two tracks. The station is staffed as a kantaku station.
Onuka Station was opened on June 15, 1935. It became part of JR West on April 1, 1987 when Japan National Railways was privatized.
In fiscal 2019, the station was used by an average of 1 passenger daily.