Eagle Mountain, California, is a modern-day ghost town, in the Colorado Desert, in Riverside County founded in 1948 by noted industrialist Henry J. Kaiser. The town is located at the entrance of the now-defunct Eagle Mountain iron mine, once owned by the Southern Pacific Railroad, then Kaiser Steel, and located on the southeastern corner of Joshua Tree National Park. The town's fully integrated medical care system, similar to other Kaiser operations in California, was the genesis of the modern-day Kaiser Permanente health maintenance organization. Eagle Mountain is accessible by Riverside County Route R2, twelve miles (19 km) north of Desert Center, midway between Indio and the California/Arizona state line along Interstate 10. The town's relative youth and brief time of abandonment make Eagle Mountain among the country's best preserved ghost towns.

The Eagle Mountains are located in northeastern Riverside County, California, U.S.