The Fremont River is a 95-mile (153 km) long river in southeastern Utah, United States that flows from the Johnson Valley Reservoir, which is located on the Wasatch Plateau near Fish Lake, southeast through Capitol Reef National Park to the Muddy Creek near Hanksville where the two rivers combine to form the Dirty Devil River, a tributary of the Colorado River.
The Fremont culture or Fremont people is a pre-Columbian archaeological culture named after the Fremont River in Utah, where the culture's sites were discovered by local indigenous peoples like the Navajo and Ute. In Navajo culture, the pictographs are credited to people who lived before the flood. The Fremont River itself is named for American explorer John C. Frémont. It inhabited sites in what is now Utah and parts of Nevada, Idaho, Wyoming and Colorado from AD 1 to 1301 (2,000–700 years ago). It was adjacent to, roughly contemporaneous with, but distinctly different from the Ancestral Pueblo peoples located to their south.