is a railway station on the Iida Line in the village of Tenryà «, Shimoina, Nagano Prefecture, Japan, operated by Central Japan Railway Company (JR Central).
Hiraoka Station is served by the Iida Line and is 93.8 kilometers from the starting point of the line at Toyohashi Station.
The station consists of a single ground-level island platform connected to the station building by a level crossing. The station is staffed.
Hiraoka Station opened on 26 April 1936 as . It was renamed to its present name on 15 November 1952. With the privatization of Japanese National Railways (JNR) on 1 April 1987, the station came under the control of JR Central.
In fiscal 2016, the station was used by an average of 64 passengers daily (boarding passengers only).