- For the mountain in Bolivia, see Potosí.
Cerro El Potosí is the highest mountain in the Sierra Madre Oriental mountain range of northeast Mexico. It is located in the state of Nuevo León, about 80 km (50 mi) south of Monterrey.
It is composed of limestone, and is noted for its very diverse flora including several endemic or near-endemic species, such as the Potosi Pinyon.
Access was very difficult in the past, but in the 1960s a microwave relay station was built on the summit, with the road built for this providing easy access from the east.