| Official Name: | Arenillas de Riopisuerga |
| Settlement Type: | Municipality and town |
| Postal Code Type: | Postal code |
| Postal Code: | 09107 |
| Area Total Km2: | 27.99 |
| Elevation M: | 791 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Pushpin Map: | Spain Castile and León#Spain |
| Coordinates: | 42.35°N -18°W |
| Website: | http://www.arenillasderiopisuerga.es/ |
Arenillas de Riopisuerga is a municipality and town located in the province of Burgos, Castile and León, Spain. According to the 2004 census (INE), the municipality had a population of 221 inhabitants.