Chelif River

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{{Infobox river

| name = Chelif

| native_name ={{native name|ar|وادي الشلف}}

| name_other = Oued Chelif{{GEOnet2|32FA8844D1FB3774E0440003BA962ED3|Oued Chelif (Approved)}}, United States National Geospatial-Intelligence Agency
Wad Sheliff{{GEOnet2|32FA8844D1F83774E0440003BA962ED3|Wad Sheliff (Variant)}}, United States National Geospatial-Intelligence Agency

| name_etymology = Berber Chenaliph

| image = Chelif River bridge.jpg

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| image_caption = Cheliff Bridge nearby Ech Cheliff

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| subdivision_type1 = Country

| subdivision_name1 = Algeria

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| subdivision_type5 = Cities

| subdivision_name5 = {{hlist|Mostaganem|Chlef|Aïn Defla|Médéa}}

| length_km = 725

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| source1 = Saharan Atlas

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| mouth = Mediterranean Sea

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| mouth_coordinates = {{coord|36|02|22|N|0|07|59|E|region:DZ|display=inline,title}}

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Chelif River ({{langx|ar|وادي الشلف}}) (also spelled Chéliff, or Sheliff{{sfn|EB staff|2015}}) is a {{convert|700|km|mi|adj=mid|-long}} river in Algeria, the longest in the country. It rises in the Saharan Atlas near the city of Aflou, flows through the Tell Atlas and empties into the Mediterranean Sea north of the city of Mostaganem. The water level in the river often fluctuates. The river is being used for irrigation (mainly on its lower course).

The river was formerly called the Mekerra and the Sig River.