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Billionaire Profile
Thierry Dassault
Global Rank
#410

Image: SD75 | CC BY-SA 4.0 | via Wikimedia Commons

Thierry Dassault

CEO, Diversified
FRANCE
Real-Time Net Worth
$8.498B
Estimated based on Diversified stock value as of March 6, 2026
-4.67% (24h)
Age
68
Source
Diversified
Industry
Diversified
Citizenship
FRANCE

Biography

Thierry Dassault, born in 1957, is a prominent French billionaire heir to the Dassault aerospace and software fortune. His estimated net worth as of 2024 is $10 billion, primarily derived from the family's stakes in Dassault Aviation and Dassault Systèmes. He has a diversified source of wealth, including holdings in media and real estate. His career includes roles in the family business since 1979, with a stint in the film industry. He is actively involved in the strategic direction and investments of the Dassault Group. Dassault is known for his contributions to the French economy and his philanthropic efforts, including his support for education and technological innovation.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life

Thierry Dassault was born on March 26, 1957, in Neuilly-sur-Seine, France, into one of France's most prominent industrial families. He is the son of Serge Dassault and the grandson of Marcel Dassault, the founder of the Dassault Group. He received his education from the prestigious École Polytechnique in Paris.

Rise to Success

Thierry Dassault began his career within the Dassault Group, gaining experience across various divisions. He has been instrumental in scaling the family fortune, overseeing the success and expansion of key entities like Dassault Aviation and Dassault Systèmes. In 2019, he succeeded his sister Marie-Hélène Habert as the supervisory board president of family-controlled aerospace and software firm Dassault Groupe. He also runs his own investment vehicle, TDH.

Key Business Strategies

Thierry Dassault's strategic leadership has guided the Dassault Group through market fluctuations and technological shifts, ensuring sustained growth and diversification. The group has expanded into new areas, including digital services and sustainable aviation initiatives. He is involved in the strategic direction and investments of the Dassault Group.

Philanthropy

Thierry Dassault supports education and technological innovation through the Fondation Dassault, reflecting the family's commitment to societal advancement.

Career Milestones

1979

Joined Dassault Group

Began working within the family's aerospace and software conglomerate.

1985

Produced and directed advertising films

Worked in the film industry with Claude Delon Productions until 1993.

1994

Joined Dassault Multimédia

Took head of Production Marcel Dassault which became Dassault Multimédia in 1998.

2006

Founded TDH

Founded his investment structure.

2019

Supervisory Board President of Dassault Groupe

Succeeded his sister Marie-Hélène Habert.

Philanthropy & Social Impact

Education and Technology

Fondation Dassault

Undisclosed

Supports education and technological innovation.

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