Nishiyama Dam is a gravity dam located in Yamanashi Prefecture in Japan.

The dam is used for power production.

The dam impounds about 24 ha of land when full and can store 2382 thousand cubic meters of water.

The construction of the dam was started on 1954 and completed in 1957.

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