Shinonoi Station (篠ノ井駅, Shinonoi-eki) is a train station in the city of Nagano, Nagano Prefecture, Japan, operated jointly by East Japan Railway Company (JR East), with the third-sector railway operating company Shinano Railway.

Shinonoi Station is one of the intermediate terminals of the discontinuous Shin'etsu Main Line, and is 9.3 kilometers from Nagano Station. It is also the terminus for the Shinonoi Line and the 65.1 kilometer Shinano Railway Line.

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

Shinanoi Station was opened on 15 August 1888. In the 1987 privatization of the Japanese National Railways (JNR), the station was assigned to the control of the East Japan Railway Company.

In fiscal 2015, the station was used by an average of 19,188 passengers daily (boarding passengers only).