NetWorth
LeaderPortfolio
Dassault
Thierry Dassault
Rank #435
FRANCE•Diversified•Diversified

Thierry Dassault

Net Worth
$8.198B
-0.72% (24h)
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.

How to read Thierry Dassault's profile

Public net-worth figures are estimates. They combine observable inputs—typically listed equity, disclosed transactions, and market prices—with editorial judgment where filings are incomplete (for example, private holdings, debt, or cross-holdings). For Thierry Dassault, we anchor the narrative to Diversified and Diversified, then update the headline number as markets move. The chart on this page is meant to show trajectory, not a certified balance sheet.

When you see $8.198B alongside global rank #435, interpret it as our best synthesis of widely cited ownership and price signals—not a claim about cash on hand. Estimates can diverge from other publishers because of different treatment of options, trusts, charitable vehicles, or illiquid assets. We document the general approach in methodology and welcome corrections via corrections.

Country (FRANCE) and career milestones on this page are curated for reader context; they should be verified against primary sources when used for research. Editorial metadata for this profile is refreshed on a rolling basis, with deeper audits at least annually (last noted cycle: 2026).

Looking for depth? When available, the dossier and timeline sections below add long-form context beyond the headline number—prioritize those modules when evaluating claims about strategy, controversies, or philanthropic commitments.

The Full Dossier

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 Timeline

2025

Resigned from the Board of Dassault Group

Replaced by his son Vincent.

2019

President of the Supervisory Board, Dassault Group

Succeeded his sister Marie-Hélène Habert in this role.

1979

Joined Dassault Group

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

Philanthropic Impact

HealthUndisclosed

France's Kidney Foundation

Serves as Vice President.

Key Business Ventures & Holdings

CompanyStakeValue
Dassault Systèmes——
Dassault Aviation66.28%—

Net Worth History

In-Depth Analysis

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.

Data Sources & Methodology

Figures for Thierry Dassault are synthesized from the sources below and cross-checked against our net worth methodology. Estimates may lag market moves; see corrections to report discrepancies.

You may also like

HubAll BillionairesHubGlobal RankingsHubNewsroom