| Tostado | |
| Native Name Lang: | es |
| Settlement Type: | City |
| Pushpin Map: | Argentina |
| Pushpin Map Caption: | Location of Tostado in Argentina |
| Coordinates: | -29.2333°N -107°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Type2: | Department |
| Subdivision Name2: | Nueve de Julio |
| Leader Party: | Justicialist Party |
| Leader Title: | Mayor |
| Leader Name: | E. D. Fedele Briggiler |
| Unit Pref: | Metric |
| Area Total Km2: | 3908 |
| Elevation M: | 64 |
| Population Total: | 14582 |
| Population As Of: | 2010 census |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code Type: | CPA base |
| Postal Code: | S3060 |
| Area Code Type: | Dialing code |
| Area Code: | +54 3491 |
Tostado is a city in the northwest of the province of Santa Fe, Argentina, 3340NaN0 north-west from the provincial capital. It had about 14,000 inhabitants at the and it is the head town of the Nueve de Julio Department.
The town was founded in 1891 and attained the status of comuna (commune) on 8 August 1904. It became a city on 31 December 1970.