Cerro El Potosí, Summit in Sierra Madre Oriental, Mexico.

Cerro El Potosí is a limestone summit in the municipality of Galeana, Nuevo León, about 11 km north-northeast of the municipal seat and roughly 80 km south of Monterrey. It rises to 3,747 meters, the highest point of the Sierra Madre Oriental, with a prominence of 1,870 meters. A road built in the 1960s for a microwave relay station near the summit allows conventional vehicles to reach the upper slopes. The peak appears on Galeana's municipal coat of arms.

In the 1960s a microwave relay station was built on the summit, and the road constructed for it opened easy access from the east; before that the ascent was very difficult. In 2000 the upper slopes were designated an ecological reserve of 9.02 km2, and the summit lies within the Cuenca Alimentadora del Distrito Nacional de Riego 026 Bajo Río San Juan. Forest fires in 1998 destroyed part of the pine and fir forests on the north and east slopes, causing erosion.

The mountain appears on Galeana's municipal coat of arms, and its name is shared with the Potosi Pinyon (Pinus culminicola), a pine that grows on its upper slopes. The summit holds an aeronautical radar reached by a dirt track, a landmark visible to walkers on the upper mountain.

The summit is accessible via a road that reaches the upper slopes, making the ascent feasible for most visitors without requiring technical climbing skills. Weather conditions can change quickly at higher elevations, so visitors should come prepared with appropriate gear and clothing for temperature shifts.

The upper slopes contain an ecological reserve established in 2000 that protects rare plant species including the Potosí Pinyon and other alpine flora found nowhere else. This protected area makes the mountain an important refuge for preserving these specialized mountain ecosystems.