| Official Name: | Kohyan |
| Native Name: | كهيان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaharmahal and Bakhtiari |
| Subdivision Type2: | County |
| Subdivision Name2: | Lordegan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Rig |
| Population As Of: | 2006 |
| Population Total: | 1,848 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.4572°N 50.9444°W |
Kohyan (Persian: كهيان, also Romanized as Kohyān, Kahīān, Kahiyan, and Kahyān) is a village in Rig Rural District, in the Central District of Lordegan County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 1,848, in 382 families.