Nevado de Cachi, Mountain peak in Cachi Department, Argentina.

Nevado de Cachi is a mountain complex of nine summits in the Calchaquí Valleys of Salta Province, Argentina, entirely within the province a few kilometres west of the village of Cachi and Route 40. Its highest summit, the Cumbre del Libertador General San Martín, reaches 6,356 m, making it the highest mountain of the Calchaquí Valleys region and the 19th highest in Argentina.

The main summit, Cumbre Libertador, was first climbed in 1950. Since then the Nevado de Cachi has seen few ascents: the main summit records fewer than five expeditions per year, and some secondary summits have been climbed only once.

The name most likely comes from Cacán, the language of the Diaguitas of the Calchaquí valleys: "Kak" means rock or crag and "Chi" or "Chin" means silence or solitude, giving "white crag of solitude" or "lonely crag". A second etymology is Quechua, imposed by the Incas, in which "cachi" means salt, perhaps because the Puna salt flats lie west beyond the mountain.

With favourable weather, a fully acclimatised party can climb the mountain in five days, starting from an altitude of 4,000 m. Wind is the main hazard, and rockfalls are common on the poor rock. In winter the snowline drops as low as 3,500 m, allowing ice and snow routes of about 55 degrees; in summer it lies near 5,800 m.

The main summit sees fewer than five expeditions a year, and some secondary summits have been climbed only once. Rockfalls are common on the poor rock, and wind is considered the main hazard.