| Official Name: | Siah Rud Poshteh |
| Native Name: | سياهرودپشته |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gilan |
| Subdivision Type2: | County |
| Subdivision Name2: | Rudbar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Rostamabad-e Shomali |
| Population As Of: | 2006 |
| Population Total: | 152 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.9989°N 49.5569°W |
Siah Rud Poshteh (Persian: سياهرودپشته, also Romanized as Sīāh Rūd Poshteh; also known as Sīāh Rūd) is a village in Rostamabad-e Shomali Rural District, in the Central District of Rudbar County, Gilan Province, Iran. At the 2006 census, its population was 152, in 41 families.