French billionaires

Élisabeth Badinter (née Bleustein-Blanchet; born 5 March 1944) is a French philosopher, author and historian.
She is best known for her philosophical treatises on feminism and women's role in society. She is an advocate of liberal feminism and women migrant workers' rights in France. Badinter is described as having a commitment to Enlightenment rationalism and universalism. She advocates for a "moderate feminism". A 2010 Marianne news magazine poll named her France's "most influential intellectual", primarily on the basis of her books on women's rights and motherhood.Badinter is the largest shareholder of Publicis Groupe, a multinational advertising and public relations company, and the chairwoman of its supervisory board. She received these shares in an inheritance from her father, Marcel Bleustein-Blanchet, who founded the company. According to Forbes, she is one of the wealthiest French citizens with a fortune of around US$ 1.8 billion in 2012.

Xavier Niel (born 25 August 1967) is a French businessman. He is involved in the telecommunications and technology industry and is the founder and majority shareholder of the French Internet service provider and mobile operator Iliad trading under the Free brand (France's second-largest ISP, and third mobile operator). He is also co-owner of the newspaper Le Monde, co-owner of the rights of the song "My Way" and owner of Monaco Telecom, Salt Mobile SA and Eir. He is chairman and chief strategy officer for Iliad, but also a board member of KKR and Unibail-Rodamco-Westfield.As of February 2024, his net worth is estimated at US$6.9 billion.

Pierre Morad Omidyar (born Parviz Morad Omidyar, June 21, 1967) is a French-born Iranian-American billionaire. A technology entrepreneur, software engineer, and philanthropist, he is the founder of eBay, where he served as chairman from 1998 to 2015. Omidyar and his wife Pamela founded Omidyar Network in 2004. As of 2023, Forbes ranked Omidyar as the 245th-richest person in the world with an estimated net worth of $8.7 billion.Omidyar is a long-term Democratic Party donor. Since 2010, he has been involved in online journalism as the head of investigative reporting and public affairs news service Honolulu Civil Beat. In 2013, he announced that he would create and finance First Look Media, a journalism venture to include Glenn Greenwald, Laura Poitras, and Jeremy Scahill.

Gérard Paul Louis Marie-Joseph Mulliez (born 13 May 1931) is a French entrepreneur. He is the founder of the Auchan chain of department stores.

Jean-Claude Decaux (15 September 1937 – 27 May 2016) was a French entrepreneur who earned his fortune in advertising. He was the founder and honorary chair of the advertising firm JCDecaux, which is now run by his sons, Jean-François Decaux and Jean-Charles Decaux.

Athina Hélène Onassis (Greek: Αθηνά Ωνάση; born Athina Hélène Roussel (Greek: Αθηνά Ρουσσέλ), 29 January 1985) is a French-Greek heiress and equestrian, the only surviving descendant of Greek shipping magnate Aristotle Onassis, and the only child of Aristotle's daughter Christina Onassis.
She makes rare public appearances.