Semi-Onsen Station (瀬見温泉駅, Semi-Onsen-eki) is a railway station in the town of Mogami, Yamagata, Japan, operated by the East Japan Railway Company (JR East).

Semi-Onsen Station is served by the Rikuu East Line, and is located 75.0 rail kilometers from the terminus of the line at Kogota Station.

The station has one side platform, serving a bidirectional single track.

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

This Yamagata Prefecture railroad station-related article is a stub.