Culver Franchising System, LLC, doing business as Culver's, is an American fast-casual restaurant chain. The company was founded in 1984 by George, Ruth, Craig, and Lea Culver. The first location opened in Sauk City, Wisconsin, on July 18, 1984, under the name "Culver's Frozen Custard and ButterBurgers." The privately held company is headquartered in Prairie du Sac, Wisconsin. The chain operates primarily in the Midwestern United States, and has a total of 965 restaurants in 26 states as of May 2024.

Sauk City is a village in Sauk County, Wisconsin, United States. The population was 3,518 as of the 2020 census. The first incorporated village in the state, the community was founded by Agoston Haraszthy and his business partner, Robert Bryant.