Lemmon Rock Lookout House, Fire lookout tower in Pima County, United States.

Lemmon Rock Lookout House is a 1928 fire lookout tower at 2,674 metres in the Santa Catalina Mountains, within Coronado National Forest and on the edge of the Pusch Ridge Wilderness in Pima County, Arizona. The lookout stands on Lemmon Rock, a high point from which a ranger watches the surrounding forest for smoke.

The building was constructed in 1928 to replace an earlier tower from 1913, making it the oldest still-operating fire lookout in Coronado National Forest. The replacement during the 1920s reflected improved methods and technology in forest fire management.

This fire lookout represents early wildfire prevention methods, when forest rangers spent seasons in remote towers watching for smoke and reporting dangers by telephone. The building shows how people managed forests before modern technology arrived in wilderness areas.

The lookout stands at 2,674 metres in the Santa Catalina Mountains, inside Coronado National Forest and beside the Pusch Ridge Wilderness. It is reached on foot by mountain trail, so plan for rough ground and sudden weather at that altitude.

The structure still follows the standardized architectural plans from the 1920s that were used throughout the Southwest Region's fire lookout network. This design consistency across many towers reflected how federal agencies approached efficiency and uniformity in remote forest management.