Unosumai Station (鵜住居駅, Unosumai-eki) is a Sanriku Railway Company railway station located in Kamaishi, Iwate Prefecture, Japan.

The station was absorbed into the JR East network upon the privatization of the Japan National Railways (JNR) on 1 April 1987.

The station (along with most of the surrounding area) was destroyed by the 11 March 2011 Tōhoku earthquake and tsunami.

As of 2018, the station have been rebuilt along with the rest of the closed segment of the Yamada Line.

It was transferred to the Sanriku Railway upon completion on 23 March 2019.