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Billionaire Profile
Thierry Dassault
Global Rank
#490

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

Thierry Dassault

CEO, Diversified
Paris, France
Real-Time Net Worth
$8.12B
Estimated based on Diversified stock value as of September 10, 2026
-1.06% (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.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$8.12B
2025$9.00B
2024$9.00B

Portfolio Holdings

Dassault Aviation

Dassault Aviation

AMmanufacturing
Ownership
66.28%
Market Cap
$28.2B
Stock Price
$361.27
Revenue
$6.23B
Paris, France
14,600 employees
Founded 1929
Dassault Systèmes

Dassault Systèmes

DSY.PARSoftware
Market Cap
$22.7B
Stock Price
$16.59
Vélizy-Villacoublay, France
Founded 1981

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.

Billionaires Connected to Thierry Dassault

Peers in Diversified

All Diversified billionaires

Adjacent Global Ranks

Full global ranking

Frequently Asked Questions

What is Thierry Dassault's net worth in 2026?
As of 2026, Thierry Dassault's estimated net worth is $8.116 billion, ranking #490 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did Thierry Dassault make their money?
Thierry Dassault's wealth primarily comes from Diversified, most notably through Diversified.
Where is Thierry Dassault from?
Thierry Dassault is from France.
How old is Thierry Dassault?
Thierry Dassault is 68 years old.

Sources & References

  1. Thierry Dassault — Forbes profile Forbes