Billionaire Profile
Thierry Dassault
Global Rank
#402

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

Thierry Dassault

CEO, Diversified
FRANCE
Real-Time Net Worth
$8.74B
Estimated based on Diversified stock value as of April 20, 2026
-1.86% (24h)
Age
68
Source
Diversified
Industry
Diversified
Citizenship
FRANCE

Biography

Thierry Dassault, a prominent figure in the diversified industry, holds an estimated net worth of $10 billion. Born on March 26, 1957, he is the son of Serge Dassault and grandson of Marcel Dassault, the founder of Dassault Aviation. Thierry is the Chairman of the Supervisory Board and Deputy CEO of the Dassault Group. His career includes roles in the family business since 1979, along with experience as a film producer. He is known for his involvement in strategic investments and a commitment to philanthropy.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life

Thierry Dassault was born on March 26, 1957, in Neuilly-sur-Seine, France. He is the son of Serge Dassault and the grandson of Marcel Dassault, the founder of Dassault Aviation. He has siblings Olivier, Laurent, and Marie-Hélène. His education focused on audiovisual communication and production at the École de communication et de production audiovisuelle de la Défense (ECPAD).

Rise to Success

Thierry Dassault's career began in the film industry in the 1970s, where he worked as a producer. He then joined the family business, Groupe Industriel Marcel Dassault (GIMD), in 1979. He holds the position of Chairman of the Supervisory Board and Deputy CEO of the Dassault Group. His role involves overseeing strategic investments across aerospace manufacturing, software, and real estate. He inherited a substantial portion of the family fortune after his father Serge Dassault's death in 2018. In 2019, he succeeded his sister Marie-Hélène Habert as the supervisory board president of family-controlled aerospace and software firm Dassault Groupe.

Key Business Strategies

Thierry Dassault's business strategy focuses on maintaining the family's diversified interests in aerospace, software, media, real estate, and luxury sectors. The family, through Groupe Industriel Marcel Dassault (GIMD), ensures control over key subsidiaries, which aligns strategic decisions.

Philanthropy

Thierry Dassault is involved in philanthropic initiatives, including serving as the Vice President of France's Kidney Foundation. The Dassault Group supports cultural and historical preservation efforts.

Career Milestones

1979

Joined Dassault Group

Began working in the family business after experience in the film industry.

2019

President of the Supervisory Board, Dassault Group

Succeeded his sister Marie-Hélène Habert in this role.

2025

Resigned from the Board of Dassault Group

Replaced by his son Vincent.

Philanthropy & Social Impact

Health

France's Kidney Foundation

Undisclosed

Serves as Vice President.