| Official Name: | Heydarabad-e Ali Mardani |
| Native Name: | حیدرآباد علیمردانی |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Semirom |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Vardasht |
| Population As Of: | 2006 |
| Population Total: | 848 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.6417°N 51.5714°W |
Heydarabad-e Ali Mardani (Persian: حیدرآباد علیمردانی, also Romanized as Ḩeydarābād-e ʿAlī Mardānī; also known as Ḩeydarābād) is a village in Vardasht Rural District, in the Central District of Semirom County, Isfahan Province, Iran. At the 2006 census, its population was 848, in 179 families.