Whataburger is a fast food chain in the United States that specializes in hamburgers. Founded in 1950 by Harmon Dobson and Paul Burton in Corpus Christi, Texas, Whataburger quickly gained popularity for its unique 5-inch hamburger. The company's headquarters are located in San Antonio, Texas.

Whataburger offers a variety of products including hamburgers, chicken sandwiches, fish sandwiches, french fries, onion rings, and milkshakes. It also provides breakfast options such as breakfast sandwiches, taquitos, and pancakes. Whataburger distinguishes itself by serving made-to-order food using fresh ingredients.

The company primarily operates in the southern United States, with more than 800 locations across Texas, Oklahoma, Louisiana, Arkansas, Alabama, Mississippi, Florida, and Arizona. While its operations are currently limited to the United States, Whataburger has gained a loyal customer base and continues to expand its presence. Whataburger has not established any noteworthy subsidiaries, joint ventures, or partnerships, and remains an independent company.

However, it has collaborated with Texas-inspired companies like H-E-B grocery stores to produce Whataburger-branded products to be sold in retail stores. In terms of market position, Whataburger is a well-known brand in the fast food industry. It has a strong following in the areas where it operates, competing against other popular fast food chains such as McDonald's, Burger King, and Wendy's.

While Whataburger's sales figures are not publicly disclosed, it remains a major player in the regional fast food market. Whataburger has experienced significant growth and success over the years. In 2019, the company announced a majority stake sale to Chicago-based investment firm, BDT Capital Partners, to further support its expansion plans.

This move demonstrated Whataburger's commitment to strengthening its brand and expanding its reach. As of the latest available information, Whataburger continues to operate successfully, with plans to open new locations and expand into new markets. While the brand has faced challenges due to the COVID-19 pandemic, it has adapted by focusing on drive-thru and delivery services to meet customer needs.

Despite these changes, Whataburger remains a beloved and iconic fast food chain in the United States