T homas Kirk Kristiansen is a Danish billionaire and the chairman of the board of directors of The Lego Group. He represents the fourth generation of the family that founded and owns the iconic toy company. He is the great-grandson of the company's founder, Ole Kirk Christiansen, and the son of Kjeld Kirk Kristiansen, the former CEO who is credited with saving the company from near-bankruptcy in the early 2000s. The family owns 75% of the privately held toy giant through their holding company, Kirkbi A/S.

As the fourth-generation leader, Thomas has taken on the most prominent public and governance role of his siblings. As chairman of the board, he is responsible for stewarding the long-term vision and strategy of one of the world's most powerful and beloved brands. He is also the chairman of the board of the Lego Foundation, a major owner of the company that is dedicated to promoting learning through play for children worldwide. His vast fortune is derived from his inherited stake in the family's vast toy and investment empire.