| Official Name: | Hesar-e Qarah Baghi |
| Native Name: | حصارقره باغي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hamedan |
| Subdivision Type2: | County |
| Subdivision Name2: | Bahar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Simineh Rud |
| Population As Of: | 2006 |
| Population Total: | 945 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.8225°N 48.2686°W |
Hesar-e Qarah Baghi (Persian: حصارقره باغي, also Romanized as Ḩeşār-e Qarah Bāghī and Ḩeşār Qareh Bāghī; also known as Ḩeşār and Ḩeşāri) is a village in Simineh Rud Rural District, in the Central District of Bahar County, Hamedan Province, Iran. At the 2006 census, its population was 945, in 197 families.