| Official Name: | Kachalun |
| Native Name: | كچلون |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kohgiluyeh and Boyer-Ahmad |
| Subdivision Type2: | County |
| Subdivision Name2: | Bahmai |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Bahmai-ye Garmsiri |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sar Asiab-e Yusefi |
| Population As Of: | 2006 |
| Population Total: | 161 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.0378°N 50.1786°W |
Kachalun (Persian: كچلون, also Romanized as Kachalūn) is a village in Sar Asiab-e Yusefi Rural District, Bahmai-ye Garmsiri District, Bahmai County, Kohgiluyeh and Boyer-Ahmad Province, Iran. At the 2006 census, its population was 161, in 27 families.