| Official Name: | Karkasar |
| Native Name: | كركسار |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kermanshah |
| Subdivision Type2: | County |
| Subdivision Name2: | Sahneh |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dinavar |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dinavar |
| Population As Of: | 2006 |
| Population Total: | 237 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.6139°N 47.4794°W |
Karkasar (Persian: كركسار, also Romanized as Karkasār and Kark Sār; also known as Kargesār and Kargsār) is a village in Dinavar Rural District, Dinavar District, Sahneh County, Kermanshah Province, Iran. At the 2006 census, its population was 237, in 63 families.