Nagatani Dam is a gravity dam located in Fukuoka Prefecture in Japan.

The catchment area of the dam is 94.8 km2.

The dam impounds about 33 ha of land when full and can store 4920 thousand cubic meters of water.

The construction of the dam was started on 1978 and completed in 1993.

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