Martin Winterkorn is a German former business executive who was chairman of the board of management of Volkswagen AG, the parent company of the Volkswagen Group, chairman of the supervisory board of Audi, and chairman of the board of management of Porsche Automobil Holding SE. He succeeded Bernd Pischetsrieder as CEO of Volkswagen AG in 2007. Prior to that, he had been the chairman of the board of management of the Volkswagen Group subsidiary Audi AG.

Volkswagen AG, known internationally as the Volkswagen Group, is a German public multinational conglomerate manufacturer of passenger and commercial vehicles, motorcycles, engines and turbomachinery. Headquartered in Wolfsburg, Lower Saxony, Germany, and since the late 2000s is a publicly-traded family business owned by Porsche SE, which in turn is half-owned but fully controlled by the Austrian-German Porsche and Piëch family. The company also offers related services, including financing, leasing, and fleet management. In 2016, it was the world's largest automaker by sales, and keeping this title in 2017, 2018, and 2019, selling 10.9 million vehicles and was the largest automaker by revenue in 2022. It has maintained the largest market share in Europe for over two decades. It ranked seventh in the 2020 Fortune Global 500 list of the world's largest companies. In Forbes Global 2000 2023 Volkswagen Group ranked 29th.