G eorg Stumpf is a self-made Austrian billionaire who built his fortune primarily in the construction and real estate industries. An engineer by training, he took over his father's small construction company and transformed it into a major international player. He is the founder of the Stumpf Group.

His most famous and ambitious project was the development of the Millennium Tower in Vienna, which was, at the time of its completion, the tallest building in Austria. He later sold the tower for a massive profit. He has since diversified his interests, investing in industrial assets and other ventures. He is known for being extremely low-profile and is one of the most private and reclusive billionaires in Austria, rarely appearing in public or giving interviews.