San Javier is a village and municipality in Misiones Province in north-eastern Argentina. It is one of the province's smaller settlements, located in the far north-east of the country near the borders with Brazil and Paraguay.
Misiones Province is characterised by subtropical forest and is best known for the Iguazú Falls, one of the region's principal tourist attractions. The province also has a history of European settlement, including communities of Central and Eastern European origin.
San Javier shares the name of several other places in Argentina and elsewhere, but this article refers specifically to the village and municipality in Misiones Province.