| Official Name: | Kalmanjan |
| Native Name: | كلمنجان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Isfahan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Qahab-e Jonubi |
| Population As Of: | 2006 |
| Population Total: | 609 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 32.6692°N 51.9153°W |
Kalmanjan (Persian: كلمنجان, also Romanized as Kalmanjān) is a village in Qahab-e Jonubi Rural District, in the Central District of Isfahan County, Isfahan Province, Iran. At the 2006 census, its population was 609, in 135 families.