Rudolf August Oetker (20 September 1916, Bielefeld - 16 January 2007) was a German entrepreneur who became a billionaire running his private food company Oetker-Gruppe.
He served in the Waffen-SS before he became the president of their family-run business in 1944, inherited from his grandfather August Oetker, who invented a popular mixture of baking powder. Rudolf August Oetker elevated the company to a household name in Germany today. The Oetker-Gruppe was one of the symbols of the post-World War II recovery effort in the country.
Oetker retired as executive director in 1981, turning the position over to his son August Oetker (jr.).