| Official Name: | Estunabad |
| Native Name: | استون اباد |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Golestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Bandar-e Gaz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Now Kandeh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Banafsh Tappeh |
| Population As Of: | 2006 |
| Population Total: | 570 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.7125°N 53.9414°W |
Estunabad (Persian: استون اباد, also Romanized as Estūnābād; also known as Estīnavā and Estīnovā) is a village in Banafsh Tappeh Rural District, Now Kandeh District, Bandar-e Gaz County, Golestan Province, Iran. At the 2006 census, its population was 570, in 151 families.