| Official Name: | Kahtubak |
| Native Name: | كهتوبك |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kerman |
| Subdivision Type2: | County |
| Subdivision Name2: | Shahr-e Babak |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dehaj |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dehaj |
| Population As Of: | 2006 |
| Population Total: | 233 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Kahtubak (Persian: كهتوبك, also Romanized as Kahtūbak) is a village in Dehaj Rural District, Dehaj District, Shahr-e Babak County, Kerman Province, Iran. At the 2006 census, its population was 233, in 30 families.