Oued El Abiod (English: Abiod Valley) is a wadi that forms a mountain pass in the Aurès massif, located in the Saharan Atlas in northeastern Algeria. Along with Oued Abdi, it is one of the most important wadis in the Aurès massif. During the wet season, rain and melting snow flow into the valley to form the Abiod River. The valley begins at the foot of Djebel Chélia, Algeria's highest mountain, and flows southwest towards Tolga, eventually dissipating into the Sahara desert nearby.