| Settlement Type: | Municipality |
| Official Name: | Os Blancos |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Coordinates: | 42.0047°N -7.7169°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | A Limia |
| Elevation M: | 797 |
| Area Total Km2: | 47.6 |
| Area Footnotes: | [1] |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Leader Title: | Mayor |
| Leader Name: | José Manuel Castro Blanco |
| Leader Party: | PPdeG |
| Area Code Type: | INE municipality code |
| Area Code: | 32012 |
Os Blancos is a municipality in the province of Ourense, in the autonomous community of Galicia, Spain. It belongs to the comarca of A Limia.