| Jōshū-Nanokaichi Station | |
| Native Name: | 上州七日市駅 |
| Native Name Lang: | ja |
| Address: | Nanokaichi 1625-1, Tomioka-shi, Gunma-ken 370-2343 |
| Country: | Japan |
| Coordinates: | 36.2586°N 138.8747°W |
| Distance: | 29.9 km from |
| Operator: | Jōshin Dentetsu |
| Line: | Jōshin Line |
| Platforms: | 1 side platform |
| Status: | Unstaffed |
| Opened: | 25 April 1912 |
| Former: | Nanokaichi (to 1921) |
| Passengers: | 257 |
| Pass Year: | FY2019 |
| Map Type: | Japan Gunma Prefecture#Japan |
is a passenger railway station in the city of Tomioka, Gunma, Japan, operated by the private railway operator Jōshin Dentetsu.
Jōshū-Nanokaichi Station is a station on the Jōshin Line, and is 21.8 kilometers from the terminus of the line at .
The station consists of a single side platform serving traffic in both directions.
Jōshū-Nanokaichi Station opened on 25 April 1912 as . It was renamed to its present name on 17 December 1921.