Ohkawa Dam (Japanese: 大川ダム（再）) is a rockfill dam located in Kagoshima Prefecture in Japan.

The dam is used for irrigation and water supply.

The surface area of the dam can reach about 19 ha of land when full and can store 2320 thousand cubic meters of water.

The construction of the dam was started in 1983 and completed in 1986.

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