Yamaguchi Bosai Dam (Japanese: 山口防災ダム) is a rockfill dam located in Ishikawa Prefecture in Japan.

The dam is used for flood control.

The catchment area of the dam is 4.7 km2.

The dam impounds about 5 ha of land when full and can store 392 thousand cubic meters of water.

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