| Najran Valley Dam | |
| Name Official: | Arabic: سدّ وَادِي نَجْرَان |
| Location Map: | Saudi Arabia#Middle East#Asia |
| Location Map Caption: | Location in Saudi Arabia |
| Coordinates: | 17.4081°N 44.014°W |
| Country: | Saudi Arabia |
| Location: | Wadi Najran, Najran Province |
| Purpose: | Water supply, flood control, groundwater recharge |
| Status: | O |
| Owner: | Ministry of Water and Electricity |
| Dam Type: | Arch |
| Dam Crosses: | Wadi Najran |
| Dam Length: | 140m (460feet) |
| Dam Height: | 73m (240feet) |
| Spillway Capacity: | 8200m3/s |
| Res Name: | Najran Reservoir |
| Res Capacity Total: | 86000000m2 |
The Najran Valley Dam (Arabic: سدّ وَادِي نَجْرَان|Sadd [[Wadi|Wādī]] Najrān / Sudd Wādī Najrān) is an arch dam on Wadi Najran about 15km (09miles) southwest of Najran, in the Najran Province of southwest Saudi Arabia. It has several purpose to include water supply, flood control and groundwater recharge. Its collects run-off and sediment in the wadi and helps release it downstream slowly throughout the year. The dam was completed in 1981, and inaugurated by the Crown Prince of Saudi Arabia Nayef bin Abdulaziz Al Saud in 1982. It is owned by the Ministry of Water and Electricity.[1] [2]