| Official Name: | Fadak |
| Native Name: | فدك |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khaf |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Salami |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Bala Khaf |
| 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: | 34.7606°N 59.825°W |
Fadak (Persian: فدك; also known as Fadūk and Fadvak) is a village in Bala Khaf Rural District, Salami District, Khaf County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 189, in 55 families.