| Official Name: | Cham Sangar |
| Native Name: | چم سنگر |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Lorestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Kuhdasht |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Darb-e Gonbad |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Darb-e Gonbad |
| Population As Of: | 2006 |
| Population Total: | 409 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.735°N 47.2467°W |
Cham Sangar (Persian: چم سنگر; also known as Sar Sangar) is a village in Darb-e Gonbad Rural District, Darb-e Gonbad District, Kuhdasht County, Lorestan Province, Iran. At the 2006 census, its population was 409, in 73 families.