|Location||Ad Damazin, Sudan|
|Dam and spillways|
|Height||78 m (256 ft)|
|Length||24,410 m (80,090 ft)|
|Total capacity||7.4 km3 (5,999,278 acre·ft)|
|Surface area||29,000 ha (71,661 acres)|
|Turbines||7 x 40 MW|
|Installed capacity||280 MW|
The Roseires Dam (Arabic: خزان الروصيرص) is a dam on the Blue Nile at Ad Damazin, just upstream of the town of Er Roseires, in Sudan. It consists of a concrete buttress dam 1 km wide with a maximum height of 68m, and an earth dam on either side. The earth dam on the eastern bank is 4 km long, and that on the western bank is 8.5 km long. The reservoir is about 290 km2.
The dam was completed in 1966, initially for irrigation purposes. A power generation plant, with a maximum capacity of 280 megawatts, was added in 1971. A heightening (and lengthening) project was completed in 2013 and the dam is now 25km long.