| Río Primero Department | |
| Native Name: | Departamento Río Primero |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | frameless |
| Coordinates: | -31.1333°N -85°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Established Title: | Foundation |
| Seat Type: | Capital |
| Seat: | Santa Rosa de Río Primero |
| Unit Pref: | Metric |
| Area Total Km2: | 6753 |
| Population Total: | 42429 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Pop. change |
| Population Blank1: | +13.49 |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code Type: | Postal code |
| Postal Code: | X5133 |
| Area Code Type: | Dialing code |
| Area Code: | 03574 |
| Blank Name Sec1: | Distances to |
| Blank Info Sec1: | |
| Blank1 Info Sec1: | ? |
| Blank2 Name Sec1: | Córdoba |
| Blank2 Info Sec1: | 100km (100miles) |
Río Primero Department is a department of Córdoba Province in Argentina.
The provincial subdivision has a population of about 42,429 inhabitants in an area of 6,753 km2, and its capital city is Santa Rosa de Río Primero.