The Najran Valley Dam () is an arch dam on Wadi Najran about southwest of Najran, in the Najran Province of southwest Saudi Arabia. Its purposes 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.