| Official Name: | Cheshmeh-ye Seyyed |
| Native Name: | چشمه سيد |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Sarayan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Ayask |
| Population As Of: | 2006 |
| Population Total: | 77 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.6783°N 57.2236°W |
| Pushpin Map: | Iran |
Cheshmeh-ye Seyyed (Persian: چشمه سيد) is a village in Ayask Rural District, in the Central District of Sarayan County, South Khorasan Province, Iran. At the 2006 census, its population was 77, in 18 families.