| Río Tercero | |
| Native Name Lang: | es |
| Settlement Type: | City |
| Pushpin Map: | Argentina |
| Pushpin Map Caption: | Location of Río Tercero in Argentina |
| Coordinates: | -32.1833°N -70°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Department |
| Subdivision Name2: | Tercero Arriba |
| Unit Pref: | Metric |
| Elevation M: | 386 |
| Population Total: | 46,421 |
| Population As Of: | 2010 census |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code Type: | CPA base |
| Postal Code: | X5850 |
| Area Code Type: | Dialing code |
| Area Code: | +54 3571 |
| Website: | Official website |
Río Tercero is a city in the center of Argentina, 96 km from Córdoba city, 35 km east of the city of Embalse, and 386 m above sea level. With a population of 46,421 people is the seventh biggest city in the province. (Cordoba)
The city was founded by Modesto Acuña on 9 September 1913.[1]
Rio tercero has declared twinning with the municipality of Carmagnola (Italy) since 2008