| Official Name: | Gandyab-e Pain |
| Native Name: | گندياب پائين |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mazandaran |
| Subdivision Type2: | County |
| Subdivision Name2: | Nur |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Natel Kenar-e Olya |
| Population As Of: | 2006 |
| Population Total: | 745 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.5333°N 52.0333°W |
Gandyab-e Pain (Persian: گندياب پائين, also Romanized as Gandyāb-e Pā’īn) is a village in Natel Kenar-e Olya Rural District, in the Central District of Nur County, Mazandaran Province, Iran. At the 2006 census, its population was 745, in 181 families.