| Official Name: | Vallejera |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Name3: | Vallejera |
| Area Total Km2: | 18 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Coordinates: | 42.1828°N -4.1522°W |
Vallejera is a municipality located in the province of Burgos, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 55 inhabitants.