| Koiwagawa Station | |
| Style: | JR East |
| Native Name: | 小岩川駅 |
| Native Name Lang: | ja |
| Address: | Koiwagawa, Tsuruoka-shi, Yamagata-ken 999-7122 |
| Country: | Japan |
| Coordinates: | 38.5904°N 139.5659°W |
| Operator: | JR East |
| Line: | Uetsu Main Line |
| Distance: | 105.4 kilometers from |
| Platforms: | 2 side platforms |
| Status: | Unstaffed |
| Opened: | February 1, 1950 |
| Map Type: | Japan Yamagata Prefecture#Japan |
| Map Dot Label: | Koiwagawa Station |
is a railway station in the city of Tsuruoka, Yamagata, Japan, operated by East Japan Railway Company (JR East).
Koiwagawa Station is served by the Uetsu Main Line, and is located 105.4km (65.5miles) from the terminus of the line at Niitsu Station.
The station has two opposed side platforms connected to the station building by a footbridge. The station is unattended.
Koiwagawa Station opened on February 1, 1950.[1] With the privatization of JNR on April 1, 1987, the station came under the control of JR East.