National Route 9 (in Spanish, Ruta Nacional 9) is a major road in Argentina, which runs from the center-east to the northwest of the country, crossing the provinces of Buenos Aires, Santa Fe, Córdoba, Santiago del Estero, Tucumán, Salta and Jujuy. It starts on Avenida General Paz, which marks the border between the Autonomous City of Buenos Aires and the surrounding province of the same name, and ends at the Horacio Guzmán International Bridge, on the La Quiaca river, traversing . The road is a limited access motorway from Buenos Aires to Rosario.