| Official Name: | Quintanilla Vivar |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Spain |
| Coordinates: | 42.4144°N -3.6894°W |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Castile and León |
| Subdivision Type2: | Province |
| Subdivision Name2: | Burgos |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Alfoz de Burgos |
| Area Total Km2: | 13.38 |
| Elevation M: | 849 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 09140 |
Quintanilla Vivar (formerly known as Quintanilla Morocisla) is a municipality and town located in the province of Burgos, Castile and León, Spain.
The village of Vivar del Cid, reputed birthplace of El Cid, is included in the municipality.
According to the 2009 census (INE), the municipality has a population of 741 inhabitants.