| Official Name: | El Idrissia |
| Settlement Type: | Commune and town |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Djelfa Province |
| Subdivision Type2: | District |
| Unit Pref: | Imperial |
| Population As Of: | 2008 |
| Population Total: | 29856 |
| Utc Offset: | +1 |
| Coordinates: | 34.45°N 34°W |
El Idrissia is a town and commune in Djelfa Province, Algeria. According to the 2008 census it has a population of 29,856.[1] It used to be known as Zenina, named after a wealthy woman who was married to a Roman officer called Serdoun. This name was given to the nearby mountain.[2]