S ofie Kirk Kristiansen is a Danish heiress and a fourth-generation owner of The Lego Group, the world-famous toy company. She is the daughter of Kjeld Kirk Kristiansen, the former CEO and grandson of the company's founder, Ole Kirk Christiansen, who started the business in 1932 as a small woodworking shop. The family's holding company, Kirkbi A/S, owns 75% of the privately held toy giant, which has become one of the most powerful and beloved brands in the world.

Sofie, along with her father, her brother Thomas, and her sister Agnete, share ownership of the family's vast fortune. While her brother Thomas has taken the most prominent leadership role as the chairman of the Lego Group's board of directors and the public face of the fourth generation, Sofie has also been involved in the governance of the family's empire. She is particularly active in the Lego Foundation, a major owner of the company that is dedicated to promoting children's development and learning through play. Her wealth is derived from her inherited stake in the iconic toy company.