Chelif River (, Wadi ash-Shalif) (also spelled Chéliff, or Sheliff) is a long river in Algeria and also the longest one in the country. It rises from the Saharan Atlas near the city of Aflou, flows through the Tell Atlas and empties into the Mediterranean Sea north of the city of Mustaghanam at about . Water level in the river often fluctuates. The river is being used for irrigation (mainly on its lower course).