| Official Name: | Masarm-e Sofla |
| Native Name: | ماصرم سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Fars |
| Subdivision Type2: | County |
| Subdivision Name2: | Shiraz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Arzhan |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Kuh Mareh Sorkhi |
| Population As Of: | 2006 |
| Population Total: | 251 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 29.5392°N 52.1858°W |
Masarm-e Sofla (Persian: ماصرم سفلي, also Romanized as Māşarm-e Soflá, Māsaram-e Soflá, and Māsarm-e Soflá; also known as Māsaram, Māsaram-e Pā’īn, and Māsarm-e Pā’īn) is a village in Kuh Mareh Sorkhi Rural District, Arzhan District, Shiraz County, Fars Province, Iran. At the 2006 census, its population was 251, in 61 families.