San Javier (Spanish pronunciation: [saŋ xaˈβjeɾ]) is a small town and municipality in the autonomous community and province of Murcia in southeastern Spain.

There is, however, evidence of prehistoric human presence at several nearby locations, including Cabezo Gordo hill in Torre-Pacheco and the salty coastal lagoon, the Mar Menor.

[3] In Al-Andalus, during Islamic rule in the Iberian Peninsula, while there was little Arab or Berber presence in the territory of the current municipality there is evidence of use of their fishing technology, known in Spanish as encañizada.

Some of the families obtaining property near the Mar Menor took their surnames from the local area: Lo de Tacón, Saavedra, Roda, Galtero y Aledo.

[5] During the three years of the Trienio Liberal (1820–1823), a number of town councils were established in the Huerta de Murcia and Mar Menor regions.

[5] Over the last 30 years of the 19th century, economic hardship and poverty in the municipality led inhabitants to migrate to find work as farmhands and miners, in La Unión in Murcia and Oran in Algeria.