Vaughn is a census-designated place (CDP) in Cascade County, Montana, United States. The population was 658 at the 2010 census. It is part of the Great Falls, Montana Metropolitan Statistical Area. It is named for Montana pioneer Robert Vaughn, whose homestead on the Vaughn Ranch encompassed part of the town.
While trying to make his fortune gold mining in Nelson Gulch near what is now Helena, Montana, Welsh American immigrant Robert Vaughn became convinced that Montana was excellent ranching and farming country. In the fall of 1869, he traveled into Chouteau County, Montana, which at the time covered nearly a sixth of the state. About 9 miles (14 km) upstream from where the Sun River joined the Missouri River, he decided to homestead. He returned to Helena and filed paperwork to claim the land, and learned he was the first individual to formally file for a homestead in Chouteau County. Although Vaughn started out farming, he quickly turned to ranching. He imported a large number of pure-bred cattle and horses, and his horses were some of the best in the state.
Vaughn's young wife, Elizabeth, died of complications from childbirth on January 13, 1888.