Mizunuma Station (水沼駅, Mizunuma-eki) is a railway station in the city of Kiryū, Gunma, Japan, operated by the third sector railway company Watarase Keikoku Railway.

Mizunuma Station is a station on the Watarase Keikoku Line and is 16.9 kilometers from the terminus of the line at Kiryū.

The station has a two opposed side platforms connected by a level crossing. The station is unattended.

Mizunuma Station opened on 5 September 1912 as Mizunuma Teishajo (水沼停車場) on the Ashio Railway. It was renamed to its present name on 1 June 1918.

In fiscal 2019, the station was used by an average of 99 passengers daily (boarding passengers only).

• former Mizunuma Village Hall
• Mizunuma Post Office
• National Route 122

• List of railway stations in Japan

• Station information (Watarase Keikoku) (in Japanese)