The Denver Mint is a branch of the United States Mint that struck its first coins on February 1, 1906. The mint is still operating and producing coins for circulation, as well as mint sets and commemorative coins. Coins produced at the Denver Mint bear a D mint mark (not to be confused with the mark of the Dahlonega Mint). The Denver Mint is the single largest producer of coins in the world.

The predecessors of the Denver Mint were the men of Clark, Gruber and Company. During the Pikes Peak Gold Rush, they coined gold dust brought from the gold fields by the miners. For almost three years, they minted gold coins (1860–61) and ingots (1862). They were formally bought by the US Treasury in 1863.

Established by an Act of Congress on April 21, 1862, the United States Mint at Denver opened for business in late 1863 as a United States Assay Office. Operations began in the facilities of Clark, Gruber and Company, located at 16th and Market Streets and acquired by the government for $25,000.

Unlike Clark, Gruber and Company, though, the Denver plant performed no coinage of gold as first intended. One reason given by the Director of the Mint for the lack of coinage at Denver was, "... the hostility of the Indian tribes along the routes, doubtless instigated by rebel emissaries (there being a Civil War) and bad white men."

Denver ( /ˈdɛnvər/) (Arapaho: Niinéniiniicíihéhe' ) is the largest city and the capital of the U.S. state of Colorado. As Denver County, it is the second most populous county in Colorado after El Paso County, which surpassed Denver County as of the 2010 Census. Denver is a consolidated city-county, located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains. The Denver downtown district is located immediately east of the confluence of Cherry Creek with the South Platte River, approximately 12 miles (19 km) east of the foothills of the Rocky Mountains. Denver is nicknamed the Mile-High City because its official elevation is exactly one mile (1.6 km) or 5,280 feet (1,609.344 m) above sea level, which is defined by the elevation of the spot of a benchmark on the steps of the State Capital building. The elevation of the entire city ranges from 5,130 to 5,680 feet. The 105th meridian west of Greenwich passes through Union Station and is the temporal reference for the Mountain Time Zone.