Murai Station (村井駅, Murai-eki) is a train station in the city of Matsumoto, Nagano Prefecture, Japan, operated by East Japan Railway Company (JR East), with a freight terminal operated by the Japan Freight Railway Company.

Murai Station is served by the Shinonoi Line and is 6.8 kilometers from the terminus of the line at Shiojiri Station.Many trains of the Chūō Main Line continue past the nominal intermediate terminus of the line at Shiojiri and continue on to Matsumoto via this station.

The station consists of a single ground-level island platform, connected to the station building by a level crossing. The station has a Midori no Madoguchi staffed ticket office.

Murai Station opened on 15 December 1902. With the privatization of Japanese National Railways (JNR) on 1 April 1987, the station came under the control of JR East. Station numbering introduced on the line from February 2025, with the station being assigned number SN03.

In fiscal 2015, the station was used by an average of 1776 passengers daily (boarding passengers only).