| Official Name: | Hoseynabad |
| Native Name: | حسين اباد |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Markazi |
| Subdivision Type2: | County |
| Subdivision Name2: | Arak |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Masumiyeh |
| Population As Of: | 2006 |
| Population Total: | 176 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.0289°N 49.7756°W |
Hoseynabad (Persian: حسين اباد, also Romanized as Ḩoseynābād and Hosein Abad; also known as Ḩoseynābād-e Baghdādī) is a village in Masumiyeh Rural District, in the Central District of Arak County, Markazi Province, Iran. At the 2006 census, its population was 176, in 47 families.