Karl Hans Albrecht (born 20 February 1920) is a German entrepreneur who founded the discount supermarket chain Aldi with his brother Theo. As of October 2012, Albrecht is listed as one of the richest people in the world with an estimated net worth of US$22.6 billion.[4] Previously, Forbes listed him as one of richest men in the world, with an estimated net worth in 2011 of US$25.4 billion, which ranks him 10th in its 2012 list of billionaires – making him the oldest billionaire in the Top 20 list.[1] Albrecht is the richest person in Germany, and the fourth-richest in Europe.[5]