| Official Name: | Kolahjub |
| Native Name: | كله جوب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ilam |
| Subdivision Type2: | County |
| Subdivision Name2: | Sirvan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Karezan |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Karezan |
| Population As Of: | 2006 |
| Population Total: | 183 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.7114°N 46.5508°W |
Kolahjub (Persian: كله جوب, also Romanized as Kolahjūb and Kolah Jūb) is a village in Karezan Rural District, Karezan District, Sirvan County, Ilam Province, Iran. At the 2006 census, its population was 183, in 39 families. The village is populated by Kurds.[1]