Ohzsemachi Dam (Japanese: 大世町ダム) is an earthfill dam located in Ishikawa Prefecture in Japan.

The catchment area of the dam is 0.9 km2.

The dam impounds about 14 ha of land when full and can store 861 thousand cubic meters of water.

The construction of the dam was started on 1942 and completed in 1954.

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