Traslasierra Valley (spanish: Valle de Traslasierra) is a natural geographic region of the province of Córdoba, Argentina, located west of the Sierras Grandes and east of the Sierras Occidentales. The tourist capital is the city of Mina Clavero and the most important commercial center is the city of Villa Dolores.
Because of its isolation until recent times, the area of Traslasierra Valley has a lower population density than the other valleys of the Sierras de Córdoba and has maintained the creole culture of gaucho type. From the 1980s, due to the difficulties of accessibility and the wild nature, the hippie movement or similar groups have settled in the area.