This person owns and was the CEO of the Aldi Nord discount supermarket chain. In the US he owns the Trader Joe's specialty grocery store chain. His brother Karl Albrecht owns the Aldi Süd discount supermarket chain. He is the ninth richest person in the world.

Theo Albrecht owned and led Aldi Nord (North) in Germany, while his brother Karl owned Aldi Süd (South). Theo also acquired Trader Joe's in the US in 1979, expanding the discount grocery concept internationally. The Albrecht brothers' split of Aldi created two separate but highly successful discount supermarket chains. James Simons (hedge funds), John Mars (candy), and Philip Knight (Nike) are not associated with Aldi.