Steak 'n Shake

Steak 'n Shake Operations, Inc., doing business as Steak 'n Shake, is an American casual restaurant chain concentrated primarily in the Midwestern United States with locations also in the South, Mid-Atlantic, Western United States, Europe, and the Middle East. The company is headquartered in Indianapolis, Indiana and is a wholly owned subsidiary of Biglari Holdings. As of 2018, 628 Steak 'n Shake restaurants were in operation; of those 414 were corporate-owned, and 214 franchised. The company has since attempted to convert to a fully franchised model.

Restaurant locations have sit-down, drive-thru, and front-window service; they provide a hybrid of fast-food to-go and diner-style sit-down service. In 2021, the company had 536 locations, but the number had dropped to 493 by March 31, 2023, according to Biglari Holdings; not all of those were in operation at that time.