| Gunma-Ōtsu Station | |
| Style: | JR East |
| Native Name: | 群馬大津駅 |
| Native Name Lang: | ja |
| Address: | Naganohara 1484-2, Naganohara-machi, Agatsuma-gun, Gunma-ken 377-1304 |
| Country: | Japan |
| Distance: | 44.2 km from |
| Operator: | JR East |
| Line: | Agatsuma Line |
| Platforms: | 1 side platform |
| Status: | Unstaffed |
| Opened: | 7 March 1971 |
| Passengers: | 86 |
| Pass Year: | FY2011 |
| Map Type: | Japan Gunma Prefecture#Japan |
| Map Dot Label: | Gunma-Ōtsu Station |
is a passenger railway station in the town of Naganohara, Gunma Prefecture, Japan, operated by East Japan Railway Company (JR East).
Gunma-Ōtsu Station is a station on the Agatsuma Line, and is located 44.2 rail kilometers from the opposing terminus of the line at Shibukawa Station.
The station consists of a single side platform serving bidirectional traffic. The station is unattended.
Gunma-Ōtsu Station was opened on 7 March 1971. The station was absorbed into the JR East network upon the privatization of the Japanese National Railways (JNR) on 1 April 1987.