| Official Name: | Kahgan-e Sofla |
| Native Name: | كاهگان سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Fereydunshahr |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Poshtkuh-e Mugui |
| Population As Of: | 2006 |
| Population Total: | 136 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 32.6972°N 49.9397°W |
Kahgan-e Sofla (Persian: كاهگان سفلي, also Romanized as Kāhgān-e Soflá; also known as Kagūn, Kāhangān, Kāhgān, and Kūgān) is a village in Poshtkuh-e Mugui Rural District, in the Central District of Fereydunshahr County, Isfahan Province, Iran. At the 2006 census, its population was 136, in 27 families.