Carl Erik Hagen, 29, net worth: $1.2 billion (£961bn)
Carl Erik Hagen, who is not known to be dating anyone at the moment, owns a 30% stake in Canica, the parent company of RMI, the Norwegian supermarket chain his father Stein Erik Hagan founded in 1985. He also serves on the board of Scandinavian e-commerce firm Komplett.