Lost Wilson Mountain is a 6,762-foot-elevation (2,061-meter) summit in Yavapai County, Arizona, United States.

Topographic relief is significant as the summit rises 1,760 feet (536 meters) above Sterling Canyon in 0.6 mile (1 km).

The nearest higher neighbor is Wilson Mountain, 1.79 miles (2.88 km) to the southeast.

[3] The mountain's toponym has been officially adopted by the United States Board on Geographic Names.

[4] Climbers can expect afternoon rain and lightning from the seasonal monsoon in late July and August.