Benson Grist Mill is a restoration-replica museum located in Tooele County, Utah in the western United States, which allows visitors to see the inner workings of a latter-nineteenth-century pioneer gristmill. It has four other historic (nineteenth-century) buildings which have been moved onto the site, as well as four ancillary structures, including an open-air pavilion. It covers 6.98 acres (2.82 hectare) along State Highway 138, 0.8 mile southwest of the intersection of the Road with State Highway 36 (known as Mills Junction). The museum is owned and operated by a division of Tooele County.
In 1983 a Stansbury Park resident, John "Jack" Smith, formed a committee to acquire and restore the historic mill. The committee succeeded in getting the mill property deeded to Tooele County, and in causing the county to create a governmental unit to oversee the mill's restoration and operation.
Restoration of the mill and construction or repair of the other facilities and structures at the site were largely completed by volunteer effort, with financial assistance from the county. By the late 1980s visitors were being accepted to tour the site.