| Official Name: | Deh-e Mardeh |
| Native Name: | دهمرده |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sistan and Baluchestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Hirmand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Margan |
| Population As Of: | 2006 |
| Population Total: | 147 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.0592°N 61.6125°W |
Deh-e Mardeh (Persian: دهمرده) is a village in Margan Rural District, in the Central District of Hirmand County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 147, in 30 families.