Shimanokoshi Station (島越駅, Shimanokoshi-eki) is a railway station on the Sanriku Railway Company’s Rias Line located in the village of Tanohata, Iwate Prefecture, Japan.

The station was destroyed by the 2011 Tōhoku earthquake and tsunami and subsequently rebuilt at a new location.

Shimanokoshi Station is served by the Rias Line, and is located 125.6 rail kilometers from the terminus of the line at Sakari Station.

Shimanokoshi Station opened on 1 April 1984, the same day of the privatization of the Japan National Railway (JNR) Kuji Line (which became the Sanriku Railway Company).

During the 11 March 2011 Tōhoku earthquake and tsunami, much of the surrounding area was destroyed by a 20 metres (66 ft) tsunami, which also swept away the station building, and parts of the tracks and suspending services on a portion of the Sanriku Railway.