Tostado is a city in the northwest of the province of Santa Fe, Argentina, 334 km north-west from the provincial capital. It had about 14,000 inhabitants at the 2010 census and it is the head town of the Nueve de Julio Department. The town was founded in 1891 and attained the status of comuna on 8 August 1904. It became a city on 31 December 1970.