| Official Name: | Oued Sly |
| Settlement Type: | Commune and town |
| Mapsize: | 180px |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Chlef Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Boukadir |
| Unit Pref: | Imperial |
| Population As Of: | 2008[1] |
| Population Total: | 47248 |
| Utc Offset: | +1 |
| Coordinates: | 36.1°N 1.2°W |
Oued Sly is a town and commune in Chlef Province, Algeria. According to the 1998 census it has a population of 41,245.[2]