| Official Name: | Chil Sar |
| Native Name: | چيلسر |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sistan and Baluchestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Chabahar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dashtiari |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sand-e Mir Suiyan |
| Population As Of: | 2006 |
| Population Total: | 209 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 25.4247°N 61.3117°W |
Chil Sar (Persian: چيلسر, also Romanized as Chīl Sar; also known as Chīleh Sar, Nīlag, and Tembū’ī) is a village in Sand-e Mir Suiyan Rural District, Dashtiari District, Chabahar County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 209, in 44 families.