San Javier is a city in the northeast of the province of Santa Fe, Argentina, 156 km north-northeast from the provincial capital. It had about 13,000 inhabitants at the 2010 census [INDEC] and it is the head town of the San Javier Department.

The town was founded in 1743 by Francisco de Echagüe y Andía, but only recognized as such by the provincial government in 1866. It attained the status of comuna (commune) on 1884-05-25, and became a city on 1979-12-02.

• Municipal information: Municipal Affairs Federal Institute (IFAM), Municipal Affairs Secretariat, Ministry of Interior, Argentina. (in Spanish)
• "San Javier, Santa Fe". Santa Fe provincial government.