| Omoigawa Station | |
| Style: | JR East |
| Native Name: | 思川駅 |
| Native Name Lang: | ja |
| Address: | 965 Matsunuma, Oyama-shi, Tochigi-ken 323-0007 |
| Country: | Japan |
| Operator: | JR East |
| Line: | Ryōmō Line |
| Distance: | 5.4 km from |
| Platforms: | 1 island platform |
| Tracks: | 2 |
| Status: | Unstaffed |
| Opened: | 10 April 1911 |
| Passengers: | 675 |
| Pass Year: | FY2002 |
| Map Type: | Japan Tochigi Prefecture#Japan |
| Map Dot Label: | Omoigawa Station |
is a railway station in the city of Oyama, Tochigi Prefecture, Japan, operated by the East Japan Railway Company (JR East).
Omoigawa Station is served by the Ryōmō Line, and is located 5.4 km from the terminus of the line at Oyama Station.
Omoigawa Station has one island platform connected to the station building by a footbridge. The station is unattended.
Oyama Station was opened on 10 April 1911. The station was absorbed into the JR East network upon the privatization of the Japanese National Railways (JNR) on 1 April 1987. A new station building was completed in March 2000.