Thierry Dassault’s net worth over time
Only dates with a published estimate are shown. Nothing is filled in between. Tap or hover a bar to see the source.
See the numbers as a table
| Date | Estimate | Source |
| 2019 | $6 billion | Forbes World's Billionaires List 2019 |
| 2020 | $4.7 billion | Forbes World's Billionaires List 2020 |
| 2021 | $7.3 billion | Forbes World's Billionaires List 2021 |
| 2022 | $8.4 billion | Forbes World's Billionaires List 2022 |
| 2023 | $8.1 billion | Forbes World's Billionaires List 2023 |
| 2024 | $9.4 billion | Forbes World's Billionaires List 2024 |
| 2025 | $10.6 billion | Forbes World's Billionaires List 2025 |
| 2026 | $9 billion | Forbes World's Billionaires List 2026 |
| Oct 2026 | $8.6 billion | Forbes Real-Time Billionaires · Forbes real-time estimate |
Where the money comes from
These are the main sources of wealth named in the reporting we cite. No published source breaks the total into exact amounts, so we do not show percentages.
Thierry Dassault’s fortune in real-life terms
Based on the Forbes Real-Time Billionaires estimate above. Median full-time U.S. pay is $65,416 a year ($1,258 a week, BLS, Q2 2026), before taxes. Typical (median) U.S. family net worth is $216,100 (Federal Reserve, 2025 Survey of Consumer Finances).
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Thierry Dassault has an estimated net worth of $8.6 billion, according to Forbes Real-Time Billionaires, Thierry Dassault profile (figures as of October 20, 2026). That is up from $6 billion in 2019.
Thierry Dassault is a French businessman tied to the Dassault family empire in aerospace, software, media, vineyards, and private aviation. He is chairman of the supervisory board and deputy CEO of Dassault Group. His career has included work inside and outside the family business since 1979. He also spent time in film production and runs his own investment vehicle, TDH. In 2019, he took over as supervisory board president of Dassault Groupe.
His wealth comes from the Dassault fortune he inherited with his siblings after Serge Dassault died in 2018. The family business traces back to his grandfather Marcel Dassault, who founded Dassault Aviation after starting with propellers in World War I. Beyond the core aerospace operation, the family also owns Le Figaro, vineyards, and a private aeronautic company. Forbes put Thierry Dassault at $8.6 billion on its real-time billionaires tracker on October 20, 2026.
How Thierry Dassault built his fortune
Thierry Dassault’s money is rooted in ownership, leadership, and inheritance within one of France’s best-known industrial families. He is an heir to the Dassault aerospace and software fortune. After Serge Dassault died in 2018, Thierry inherited part of that wealth along with his siblings. His role at Dassault Group also keeps him close to the businesses behind the family fortune, including aerospace, software, media, vineyards, and private aeronautics.
His career has not been limited to one lane. He has moved in and out of the family company since 1979, while also working as a film producer. He runs TDH, his own investment vehicle, which adds another business track beyond the group itself. In 2019, he succeeded his sister Marie-Hélène Habert as supervisory board president of family-controlled Dassault Groupe, adding a key leadership role to his long connection with the company.
How Forbes values his wealth
Forbes has shown big swings in Thierry Dassault’s estimated fortune over time. It placed him at $6 billion in 2019, then $4.7 billion in 2020. The estimate later climbed to $7.3 billion in 2021 and $8.4 billion in 2022. In 2023, Forbes put him at $8.1 billion. Those changes track the value of a diversified family fortune linked to aerospace, software, media, vineyards, and private aeronautics.
The estimate kept moving after that. Forbes listed Thierry Dassault at $9.4 billion in 2024, then $10.6 billion in 2025, before lowering the figure to $9 billion in 2026. As of October 2026, Forbes showed $8.6 billion on its real-time tracker. His wealth is tied to a broad family holding structure, so shifts in business values can move the estimate up or down from year to year.
Career and money timeline
- 1979
He began a long, on-and-off run working in the family company.
- 2018
He inherited part of the Dassault fortune after Serge Dassault died.
- 2019
He became supervisory board president of Dassault Groupe, succeeding Marie-Hélène Habert.
- 2026
Forbes listed his real-time net worth at $8.6 billion in October 2026.
Thierry Dassault net worth FAQ
What is Thierry Dassault's net worth?
Thierry Dassault's net worth is an estimated $8.6 billion, according to Forbes Real-Time Billionaires, Thierry Dassault profile (October 20, 2026). It is an estimate, not an official figure.
How did Thierry Dassault get so rich?
The main sources named in the reporting we cite are: Diversified.
Is Thierry Dassault a billionaire?
Yes. Forbes Real-Time Billionaires estimates Thierry Dassault is worth $8.6 billion.
How has Thierry Dassault's net worth changed?
The earliest published estimate we track is $6 billion (2019, Forbes World's Billionaires List 2019). The latest is $8.6 billion (October 20, 2026).
What companies are behind Thierry Dassault’s wealth?
His fortune is tied to the Dassault family’s aerospace and software holdings. The family also owns Le Figaro, vineyards, and a private aeronautic company.
Did Thierry Dassault make his money on his own?
No. Forbes describes him as an heir to the Dassault family fortune. He also holds leadership roles and runs TDH, his own investment vehicle.
Sources
- Forbes Real-Time Billionaires, Thierry Dassault profile (October 20, 2026)
- Forbes World's Billionaires List 2019, Thierry Dassault profile (March 5, 2019)
- Forbes World's Billionaires List 2020, Thierry Dassault profile (April 7, 2020)
- Forbes World's Billionaires List 2021, Thierry Dassault profile (April 6, 2021)
- Forbes World's Billionaires List 2022, Thierry Dassault profile (April 5, 2022)
- Forbes World's Billionaires List 2023, Thierry Dassault profile (April 4, 2023)
- Forbes World's Billionaires List 2024, Thierry Dassault profile (April 2, 2024)
- Forbes World's Billionaires List 2025, Thierry Dassault profile (April 2025)
- Forbes World's Billionaires List 2026, Thierry Dassault profile (March 10, 2026)
- U.S. Bureau of Labor Statistics, Usual Weekly Earnings (Q2 2026) (July 2026)
- Federal Reserve, 2025 Survey of Consumer Finances (median family net worth, Table 4) (October 2026)
- Background facts: Wikipedia, Thierry Dassault (accessed October 25, 2026). Used for career facts only, never for figures.
Photo: SD75, CC BY-SA 4.0, via Wikimedia Commons.
Every number on this page is an estimate published by the source named next to it. We never fill in years with our own guesses. How we handle estimates.