| Official Name: | Monj-e Sofla |
| Native Name: | منج سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Fars |
| Subdivision Type2: | County |
| Subdivision Name2: | Bavanat |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sarvestan |
| Population As Of: | 2006 |
| Population Total: | 423 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 30.3475°N 53.8956°W |
Monj-e Sofla (Persian: منج سفلي, also Romanized as Monj-e Soflá; also known as Monj-e Pā’īn, Mūnj, and Qal‘eh-ye Pā’īn) is a village in Sarvestan Rural District, in the Central District of Bavanat County, Fars Province, Iran. At the 2006 census, its population was 423, in 121 families.