| Official Name: | Chahak |
| Native Name: | چاهك |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sistan and Baluchestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khash |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Nukabad |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Eskelabad |
| Population As Of: | 2006 |
| Population Total: | 91 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 28.6758°N 60.8508°W |
Chahak (Persian: چاهك, also Romanized as Chāhak; also known as Chāhūk and Chāqak) is a village in Eskelabad Rural District, Nukabad District, Khash County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 91, in 17 families.