Koshimizu Station (越水駅, Koshimizu-eki) is a railway station in the city of Tsugaru, Aomori Prefecture, Japan, operated by the East Japan Railway Company (JR East).

The station has one ground-level side platform serving a single bi-directional track.

The station was opened on November 20, 1954, in the former village of Morita, Nishitsugaru District.

With the privatization of Japan National Railways on April 1, 1987, it came under the operational control of JR East.

This Aomori Prefecture railroad station-related article is a stub.