| Castrillino | |
| Settlement Type: | Minor local entity |
| Pushpin Map: | Spain Province of León#Spain Castile and León#Spain |
| Pushpin Label: | Castrillino |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Province of León |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Villaquilambre |
| Population Total: | 17 |
| Coordinates: | 42.6542°N -5.5106°W[1] |
| Elevation M: | 906 |
| Postal Code Type: | Postal code |
Castrillino is a locality and minor local entity located in the municipality of Villaquilambre, in León province, Castile and León, Spain. As of 2020, it has a population of 17.[2]
Castrillino is located 12km northeast of León, Spain.