Kadaijin Dam (Japanese: 嘉太神ダム) is an earthfill dam located in Miyagi Prefecture in Japan.

The dam is used for flood control and irrigation.

The catchment area of the dam is 15 km2.

The dam impounds about 18 ha of land when full and can store 854 thousand cubic meters of water.

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