Miyama Dam is an asphalt dam located in Tochigi prefecture in Japan.

The dam is used for irrigation, water supply and power production.

The dam impounds about 97 ha of land when full and can store 25800 thousand cubic meters of water.

The construction of the dam was started on 1968 and completed in 1973.

This article about a dam or floodgate in Kantō region of Honshu, Japan is a stub.