| Official Name: | Najafabad |
| Native Name: | نجفاباد |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Markazi |
| Subdivision Type2: | County |
| Subdivision Name2: | Ashtian |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Siyavashan |
| Population As Of: | 2013 |
| Population Total: | 213 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.4503°N 49.8011°W |
Najafabad (Persian: نجفاباد, also Romanized as Najafābād; also known as Najīfābād) is a village in Siyavashan Rural District, in the Central District of Ashtian County, Markazi Province, Iran. At the 2005 census, its population was 213, in 76 families.