| Koikawa Station | |
| Style: | JR East |
| Native Name: | 鯉川駅 |
| Native Name Lang: | ja |
| Address: | Ofukane Koikawa, Mitane-cho, Yamamoto-gun, Akita-ken 018-2103 |
| Country: | Japan |
| Coordinates: | 39.9964°N 140.0775°W |
| Status: | Unstaffed |
| Operator: | JR East |
| Line: | Ōu Main Line |
| Distance: | 333.0 km from |
| Platforms: | 2 side platforms |
| Tracks: | 2 |
| Opened: | February 1, 1950 |
| Map Type: | Japan Akita Prefecture#Japan |
| Map Dot Label: | Koikawa Station |
is a railway station in the town of Mitane, Yamamoto District, Akita Prefecture, Japan, operated by East Japan Railway Company (JR East).
Koikawa Station is served by the Ōu Main Line, and is located 333.0 km from the terminus of the line at Fukushima Station.
Moritake Station consists of two opposed side platforms connected by a footbridge. The station is unattended.
Koikawa Station began as on September 30, 1944, and was elevated to a full station on the Japan National Railway (JNR), serving the town of Kado, Akita on February 1, 1950. It has been unattended since October 1971. The station was absorbed into the JR East network upon the privatization of the JNR on April 1, 1987. A new station building was completed in July 2007.