Iwadeyama Station (岩出山駅, Iwadeyama-eki) is a railway station on the Rikuu East Line in the city of Ōsaki, Miyagi Prefecture, Japan, operated by East Japan Railway Company (JR East).

Iwadeyama Station is served by the Rikuu East Line, and is located 24.8 rail kilometers from the terminus of the line at Kogota Station.

Iwadeyama Station has one island platform, connected to the station building by a level crossing.

Iwadeyama Station opened on 20 April 1913.

The station was absorbed into the JR East network upon the privatization of JNR on 1 April 1987.