| Official Name: | Fathabad |
| Native Name: | فتح اباد |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Yazd |
| Subdivision Type2: | County |
| Subdivision Name2: | Mehriz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Ernan |
| Population As Of: | 2006 |
| Population Total: | 64 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.2925°N 54.3403°W |
Fathabad (Persian: فتح اباد, also Romanized as Fatḩābād; also known as Chāh Gaz, Chehel Gaz, Chehil Gazi, and Fatḩābād-e Chehel Gazī) is a village in Ernan Rural District, in the Central District of Mehriz County, Yazd Province, Iran. At the 2006 census, its population was 64, in 23 families.