| Official Name: | Sarajlu |
| Native Name: | سراجلو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ahar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Azghan |
| Population As Of: | 2006 |
| Population Total: | 359 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.7042°N 46.8719°W |
Sarajlu (Persian: سراجلو, also Romanized as Sarājlū; also known as Sūrūjar, Sarājarlū, and Sarājehlū) is a village in Azghan Rural District, in the Central District of Ahar County, East Azerbaijan Province, Iran. At the 2006 census, its population was 359, in 79 families.