Javier (pronounced [xaˈβjeɾ]) is the Spanish spelling of the masculine name Xavier.

This birthplace name, in turn, has Basque roots, etymologically originating in the word etxaberri (etxe berri in standard spelling), meaning "castle" or "new house".

Etxeberria, Echeverría, Echevarría, Etxebarri, and Chávarri are Basque surnames related to the name by etymology.

Its diffusion is due to the fame of Jesuit priest and missionary Saint Francis Xavier (Spanish: San Francisco Javier).

Contemporary use of the name Javier is found in Spain, Equatorial Guinea and Latin American countries, where it is popular.