| Official Name: | Sarab-e Rajab |
| Native Name: | سراب رجب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Lorestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Pol-e Dokhtar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Jelogir |
| Population As Of: | 2006 |
| Population Total: | 511 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.0161°N 47.7675°W |
Sarab-e Rajab (Persian: سراب رجب, also Romanized as Sarāb-e Rajab) is a village in Jelogir Rural District, in the Central District of Pol-e Dokhtar County, Lorestan Province, Iran. At the 2006 census, its population was 511, in 113 families.