| Official Name: | Cueva de Ágreda |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Castile and León#Spain |
| Pushpin Map Caption: | Location in Spain. |
| Subdivision Name3: | Caracena |
| Area Total Km2: | 45.05 |
| Elevation M: | 965 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Barca is a municipality located in the province of Soria, in the autonomous community of Castile and León, Spain.
Included in the Natura 2000 network is a Site of Community Importance known as Riberas del Río Duero y afluentes (Riberas del Río Duero and tributaries), which occupies .[1]