is a Tokyo Metro railway station in Shinjuku, Tokyo, Japan. It is on the Tokyo Metro Marunouchi Line and is numbered M-07.
Nishi-shinjuku Station is served by the , and is numbered M-07.
The station has two side platforms serving two tracks.
Nishi-shinjuku Station opened on 28 May 1996.
The station facilities were inherited by Tokyo Metro after the privatization of the Teito Rapid Transit Authority (TRTA) in 2004.