| Castellvell | |
| Official Name: | El Castellvell |
| Settlement Type: | Locality |
| Pushpin Map: | Spain Province of Lleida#Spain Catalonia#Spain |
| Pushpin Label: | Castellvell |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Type1: | Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Lleida |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Olius |
| Population Total: | 37 |
| Coordinates: | 41.9942°N 1.5014°W[1] |
| Elevation M: | 833 |
| Postal Code Type: | Postal code |
Castellvell or El Castellvell is a locality located in the municipality of Olius, in Province of Lleida province, Catalonia, Spain. As of 2020, it has a population of 37.[2]
Castellvell is located 111km east-northeast of Lleida.