is a railway station on the Ainokaze Toyama Railway Line in Imizu, Toyama, Japan, operated by the third-sector railway operator Ainokaze Toyama Railway.
Kosugi Station is served by the 100.1 km Ainokaze Toyama Railway Line, and is 30.2 kilometres from the starting point of the line at .
Kosugi Station has one side platform and one island platform connected by a footbridge. The station is staffed.
The station opened on 20 March 1899. With the privatization of JNR on 1 April 1987, the station came under the control of JR West.
From 14 March 2015, with the opening of the Hokuriku Shinkansen extension from to , local passenger operations over sections of the Hokuriku Main Line running roughly parallel to the new shinkansen line were reassigned to different third-sector railway operating companies. From this date, Kosugi Station was transferred to the ownership of the third-sector operating company Ainokaze Toyama Railway.
In fiscal 2015, the station was used by an average of 3,064 passengers daily (boarding passengers only).