Okubo Dam is an earthfill dam located in Chiba Prefecture in Japan.

The catchment area of the dam is 2 km2.

The dam impounds about 4 ha of land when full and can store 326 thousand cubic meters of water.

The construction of the dam was started on 1972 and completed in 1981.

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