Gunma-Ōtsu Station (群馬大津駅, Gunma-Ōtsu-eki) 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.

• Naganohara Town Hall
• National Route 145
• Naganohara Post Office

• List of railway stations in Japan

Media related to Gumma-Ōtsu Station at Wikimedia Commons

• JR East Station information (in Japanese)