| San Javier | |
| Native Name Lang: | es |
| Settlement Type: | City |
| Pushpin Map: | Argentina |
| Pushpin Map Caption: | Location of San Javier in Argentina |
| Coordinates: | -30.5833°N -116°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Type2: | Department |
| Subdivision Name2: | San Javier |
| Leader Party: | Justicialist Party |
| Leader Title: | Mayor |
| Leader Name: | Adrián Simil |
| Unit Pref: | Metric |
| Area Total Km2: | 2284 |
| Population Total: | 13604 |
| Population As Of: | 2010 census |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code Type: | CPA base |
| Postal Code: | S3005 |
| Area Code Type: | Dialing code |
| Area Code: | +54 3405 |
San Javier is a city in the northeast of the, 156 km north-northeast from the provincial capital. It had about 13,000 inhabitants at the 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.