| Ina-Ōshima Station | |
| Native Name: | 伊那大島駅 |
| Native Name Lang: | ja |
| Style: | JR Central |
| Address: | Motoojima, Matsukawa-cho, Shimoina-gun, Nagano-ken 399-3303 |
| Country: | Japan |
| Operator: | JR Central |
| Line: | Iida Line |
| Distance: | 143.1 km from |
| Elevation: | 519 meters |
| Platforms: | 2 side platforms |
| Status: | Unstaffed |
| Opened: | 13 July 1922 |
| Passengers: | 366 (daily) |
| Pass Year: | FY2016 |
| Map Type: | Japan Nagano Prefecture#Japan |
is a railway station on the Iida Line in the town of Matsukawa, Shimoina District, Nagano Prefecture, Japan operated by Central Japan Railway Company (JR Central).
Ina-Ōshima Station is served by the Iida Line and is 143.1 kilometers from the starting point of the line at Toyohashi Station.
The station consists of two opposed ground-level side platforms connected by a level crossing. The station is staffed.
Ina-Ōshima Station opened on 13 July 1922. With the privatization of Japanese National Railways (JNR) on 1 April 1987, the station came under the control of JR Central. A new station building was completed in February 2009.
In fiscal 2016, the station was used by an average of 366 passengers daily (boarding passengers only).[1]