| Nakaisamurai Station | |
| Native Name: | 中井侍駅 |
| Native Name Lang: | ja |
| Style: | JR Central |
| Address: | Hiraoka, Tenryū-mura, Shimoina-gun, Nagano-ken 399-1201 |
| Country: | Japan |
| Coordinates: | 35.2359°N 137.835°W |
| Operator: | JR Central |
| Line: | Iida Line |
| Distance: | 87.8 km from |
| Elevation: | 289 meters |
| Platforms: | 1 side platform |
| Status: | Unstaffed |
| Opened: | 30 December 1936 |
| Passengers: | 10 (daily) |
| Pass Year: | FY2016 |
| Map Type: | Japan Nagano Prefecture#Japan |
is a railway station on the Iida Line in the village of Tenryū, Shimoina, Nagano Prefecture, Japan, operated by Central Japan Railway Company (JR Central).
Nakaisamurai Station is served by the Iida Line and is 87.8 kilometers from the starting point of the line at Toyohashi Station.
The station consists of a single ground-level side platform serving one bi-directional track. The station is unattended. There is no station building, but only a waiting room on the platform.
Nakaisamurai Station opened on 30 December 1936. With the privatization of Japanese National Railways (JNR) on 1 April 1987, the station came under the control of JR Central.
In fiscal 2016, the station was used by an average of 10 passengers daily (boarding passengers only).[1]