Shinano-Arai Station (信濃荒井駅, Shinano-Arai-eki) is a railway station in the city of Matsumoto, Nagano, Japan, operated by the private railway operating company Alpico Kōtsū.

The station has one ground-level island platform serving two tracks, connected to the station building by a level crossing.

The station opened on 2 October 1921.

A new station building was completed in 1993.

In fiscal 2016, the station was used by an average of 36 passengers daily (boarding passengers only).