| Official Name: | Vanak-e Sofla |
| Native Name: | ونك سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Chadegan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Chenarud |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Chenarud-e Shomali |
| Population As Of: | 2006 |
| Population Total: | 105 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 32.6472°N 50.4136°W |
Vanak-e Sofla (Persian: ونك سفلي, also Romanized as Vanak-e Soflá; also known as Vanak-e Pā’īn) is a village in Chenarud-e Shomali Rural District, Chenarud District, Chadegan County, Isfahan Province, Iran. At the 2006 census, its population was 105, in 23 families.