| Official Name: | Larbaâ |
| Native Name: | الأربعاء |
| Settlement Type: | Commune and town |
| Mapsize: | 200px |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Blida Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Larbaâ District |
| Unit Pref: | Imperial |
| Area Total Km2: | 85.25 |
| Population As Of: | 2008 |
| Population Total: | 83,819 |
| Utc Offset: | +1 |
| Coordinates: | 36.5653°N 3.1539°W |
Larbaâ (al-Larbaʾāʾ) is a town in commune in Blida Province, Algeria. According to the 1998 census it has a population of 60,482.[1]