| Official Name: | Estarj |
| Native Name: | استارج |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Yazd |
| Subdivision Type2: | County |
| Subdivision Name2: | Taft |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Nasrabad |
| Population As Of: | 2006 |
| Population Total: | 13 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.7017°N 53.7061°W |
| Native Name Lang: | fa |
Estarj (Persian: استارج|translit=Estārj), also known as Estāj, is a village in Nasrabad Rural District, in the Central District of Taft County, Yazd Province, Iran. At the 2006 census, its population was 13, in 5 families.