| Official Name: | Deh-e Rajab |
| Native Name: | ده رجب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Buin va Miandasht |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sardshir |
| Population As Of: | 2006 |
| Population Total: | 189 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.1511°N 50.2822°W |
Deh-e Rajab (Persian: ده رجب) is a village in Sardshir Rural District, in the Central District of Buin va Miandasht County, Isfahan Province, Iran. At the 2006 census, its population was 189, in 45 families.