| Official Name: | Raziabad-e Pain |
| Native Name: | رضي ابادپائين |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Tehran |
| Subdivision Type2: | County |
| Subdivision Name2: | Shahriar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Razakan |
| Population As Of: | 2006 |
| Population Total: | 1,940 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.6525°N 51.0833°W |
Raziabad-e Pain (Persian: رضي ابادپائين, also Romanized as Raẕīābād-e Pā’īn and Raẕīābād Pā’īn) is a village in Razakan Rural District, in the Central District of Shahriar County, Tehran Province, Iran. At the 2006 census, its population was 1,940, in 500 families.