McDonald's Corporation (NYSE: MCD) is the world's largest chain of hamburger fast food restaurants, serving nearly 47 million customers daily. At one time it was the largest global restaurant chain, but it has since been surpassed by multi-brand operator Yum! Brands (KFC, Taco Bell and others) and sandwich chain Subway.

In addition to its signature restaurant chain, McDonald’s Corporation held a minority interest in Pret A Manger until 2008, and owned the Chipotle Mexican Grill until 2006 and the restaurant chain Boston Market until 2007. The company has also expanded the McDonald's menu in recent decades to include alternative meal options, such as salads and snack wraps, in order to capitalize on growing consumer interest in health and wellness.

Each McDonald's restaurant is operated by a franchisee, an affiliate, or the corporation itself. The corporations' revenues come from the rent, royalties and fees paid by the franchisees, as well as sales in company-operated restaurants. McDonald's revenues grew 27% over the three years ending in 2007 to $22.8 billion, and 9% growth in operating income to $3.9 billion.

McDonald's primarily sells hamburgers, cheeseburgers, chicken products, french fries, breakfast items, soft drinks, milkshakes, and desserts. In response to obesity trends in western nations and in the face of criticism over the healthiness of its products, the company has modified its menu to include such healthier alternatives as salads, wraps and fruit.