The Danjiangkou Dam (Chinese: 丹江口大坝; pinyin: Dānjiāngkǒu Dàbà) is a concrete gravity dam on the Han river near Danjiangkou in Hubei Province, China.

The dam creates a large Danjiangkou Reservoir.

In the 21st century, the Danjiangkou Dam became part of the South-North Water Transfer Project.

In 2005–2009, its height was raised in order to increase the reservoir's capacity.

The increase in height will add 11,600,000,000 m3 (9,404,273 acre⋅ft) to the reservoir's capacity bring it to 29,050,000,000 m3 (23,551,218 acre⋅ft).