Whataburger is a privately held, regional fast food restaurant chain, which specializes in hamburgers. The company, founded by Harmon Dobson, opened its first restaurant in Corpus Christi, Texas, in 1950.[1] Today, Whataburger Restaurants, LP is still owned and operated by the Dobson family and has nearly 700 locations across the Southern United States.

Whataburger is known for its distinctive A-framed, orange and white-stripe-roofed buildings. The first A-frame restaurant still standing was built in Odessa, Texas.[2] Over a dozen are still in operation.

Aside from the classic Whataburger, other menu items include the Whataburger Jr. (a smaller version of the Whataburger), the Justaburger (a Whataburger Jr. with only mustard, pickles, and onions), the Whatacatch fish sandwich, the Whatachick'n Chicken Sandwich, and taquitos.[3] Whataburger also has a breakfast menu and serves breakfast sandwiches along with other items. Whataburger's breakfast menu is unique because it is served from 11:00 p.m. through 11:00 a.m. each day, a wider window than most other fast-food restaurants, and all regular menu items are still available during breakfast service.