| Official Name: | Laj |
| Native Name: | لج |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | West Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Mahabad |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Mokriyan-e Sharqi |
| Population As Of: | 2006 |
| Population Total: | 1,297 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.9028°N 45.7661°W |
Laj (Persian: لج, also Romanized as Lej; also known as Liadzh, Liaj, and Līj; in Armenian: Լաճ) is a village in Mokriyan-e Sharqi Rural District, in the Central District of Mahabad County, West Azerbaijan Province, Iran. At the 2006 census, its population was 1,297, in 237 families.