| Official Name: | Sidi Lahcene |
| Native Name: | Arabic: سيدي لحسن |
| Settlement Type: | Commune and town |
| Mapsize: | 220px |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Sidi Bel Abbès Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Sidi Lahcène District |
| Unit Pref: | Imperial |
| Population As Of: | 2008 |
| Population Total: | 20999 |
| Utc Offset: | +1 |
| Coordinates: | 35.1633°N -0.6959°W |
Sidi Lahcene (ar|سيدي لحسن) is a town and commune in Sidi Bel Abbès Province in north-western Algeria.[1]