Olivier Dassault  was a French politician and billionaire, and a deputy in the French National Assembly.

He was the son of Nicole (née Raffel) and Serge Dassault, and the grandson of Marcel Dassault.

Dassault graduated from École de l'air as a combat engineering officer/pilot (1956) and served in the reserves of the French Air Force.

Spouse(s)

• Carole Tranchant. (m. 1989, divorced)​
• Natacha Nikolajevic, (m. 2009)​

Laurent Dassault (brother)
Children - Héléna (b.1990), Rémi (b. 1995) and Thomas (b. 2011)
Parents Serge Dassault

On 16 June 2002 he was elected as deputy for the first circonscription of Oise, running on the Union for a Popular Movement (UMP) ticket. He was re-elected in 2007.

A scion of the founding family of the aerospace engineering company Dassault Group, he worked in a number of roles within the family firm. He was president of Dassault Communications, president of the board of directors of French publisher Valmonde (a former family property), member of the board of the French financial newspaper Journal des Finances and an administrator of Dassault subsidiary Socpresse.

As of July 2019, he possessed a net worth of $6 billion USD.

He was a 1974 graduate of the École de l'Air Air Force academy and held a master's degree in mathematics (1976) as well a doctorate in business management computing (1980).

During his lifetime he cultivated a passion for photography and published several books of his photographs. Dassault was also a composer and musician, and contributed scores for several movies in the late 1970s and early 1980s.

Having qualified as a professional IFR pilot in 1975, he set a number of world speed records

1977: New York to Paris in a Dassault Falcon 50

1987: New Orleans to Paris in a Dassault Falcon 900 (both jointly with Hervé Le Prince-Ringuet)

1996: Paris to Abu Dhabi in a Falcon 900 EX

1996: Paris to Abu Dhabi in a Falcon 900 EX (both jointly with Guy Mitaux-Maurouard and Patrick Experton)

He died in a helicopter crash in Normandy on 7 March 2021.