Mitarai Dam (Japanese: 御手洗ダム) is a rockfill dam located in Kagoshima Prefecture in Japan.

The dam is used for flood control and recreation.

When full, the dam impounds about 8 ha of land and can store 1,180 thousand cubic meters of water.

The construction of the dam was started in 1971 and completed in 1982.

This article about a dam or floodgate on Kyushu, Japan is a stub.