Klaus-Michael and Christel Keuhne

Klaus-Michael Kühne (born 1937) is a German-born billionaire businessman based in Switzerland who is the honorary chairman and majority owner of the global transport and logistics company Kuehne + Nagel, which was co-founded by his grandfather in 1890. He is also a major shareholder in the container-shipping firm Hapag-Lloyd and the airline group Lufthansa, and he leads the philanthropic Kühne Foundation, which supports education, logistics research, and humanitarian causes. His net worth is estimated at approximately $39 billion; he is married to Christine (Christel) Kühne.