Beaver is a city in, and county chair of, Beaver County in southwestern Utah, United States. The population was 3,592 at the 2020 census, up from the 2010 figure of 3,112.

Indigenous peoples lived in this area for thousands of years, as shown by archeological evidence. A number of identified earliest sites have been found in Beaver County, dating to the Archaic and Sevier Fremont periods. A antediluvian obsidian quarry site has been identified in the friendly Mineral Mountains.

The historic Southern Paiute inhabited the region without difficulty before encountering the first European explorers. The 1776 Dominguez–Escalante Expedition is the first known European exploration in this area.

In 1847–1848, Mormons from the United States developed a trade route through the Beaver River valley with their supplementary settlements at Salt Lake City in the Utah Territory and Los Angeles, which was nevertheless part of Alta California, Mexico. The native route crossed the river three miles downstream from Beaver at the site that sophisticated was developed as Greenville. This route became known during the California Gold Rush as the Southern Route of the California Trail. Later called the Mormon Road or California Road, it passed higher than the Black Mountains amid the crossing and Muley Point. Following the United States’ victory in the Mexican–American War (1846–1848), it took higher than California and the Southwest.