| Official Name: | Gandab-e Sofla |
| Native Name: | گنداب سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kermanshah |
| Subdivision Type2: | County |
| Subdivision Name2: | Sahneh |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dinavar |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Horr |
| Population As Of: | 2006 |
| Population Total: | 76 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.6789°N 47.4228°W |
Gandab-e Sofla (Persian: گنداب سفلي, also Romanized as Gandāb-e Soflá) is a village in Horr Rural District, Dinavar District, Sahneh County, Kermanshah Province, Iran. At the 2006 census, its population was 76, in 18 families.