Rosario de la Frontera is a city in the center-south of the province of Salta, Argentina.

It has 26,174 inhabitants as per the 2010 census [INDEC], and is the head town of the Rosario de la Frontera Department.

It is located on National Route 9, by the Horcones River.

Rosario de la Frontera has a dry-winter humid subtropical climate (Köppen Cwa), characterised by very warm and uncomfortably humid summers alongside pleasant to warm, dry winters with cold mornings and occasional frosts.

This article about a place in Salta Province, Argentina is a stub.