| Official Name: | Castelserás, Spain |
| Pushpin Map: | Spain |
| Pushpin Relief: | 1 |
| Pushpin Label Position: | none |
| Coordinates: | 40.9833°N -8°W |
| Subdivision Name3: | Castelserás |
| Area Total Km2: | 31.52 |
| Elevation M: | 382 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Castelserás is a municipality located in the province of Teruel, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 818 inhabitants.