| Official Name: | Rostamdar Mahalleh |
| Native Name: | رستم دارمحله |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mazandaran |
| Subdivision Type2: | County |
| Subdivision Name2: | Amol |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dabudasht |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dasht-e Sar |
| Population As Of: | 2006 |
| Population Total: | 18 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.47°N 52.4828°W |
Rostamdar Mahalleh (Persian: رستم دارمحله, also Romanized as Rostamdār Maḩalleh; also known as Rostamdārī Maḩalleh) is a village in Dasht-e Sar Rural District, Dabudasht District, Amol County, Mazandaran Province, Iran. At the 2006 census, its population was 18, in 4 families.