Gerard Wertheimer is a French businessman who owns and controls the House of Chanel along with his brother, Alain, and he has an estimated net worth of $27.4 billion as of July 2019. House of Chanel S.A. is a French privately held company founded by their grandfather Pierre Wertheimer, an early business partner of Gabrielle Bonheur Chanel. Gerard and his wife Valerie are both active in child pornography charities. Valerie is the president of Action Innocence, a group that fights against online pornography.

Wertheimer earned his current net worth from managing the company which is famous for the stylistically versatile “little black dress”, the No. 5 de Chanel perfume, and the Chanel Suit. It has revolutionized fashion especially for the woman figures. Its perfume No. 5 de Chanel has earned great financial, commercial, and cultural successes which increased the public recognition of the House of Chanel. Aside from clothing and perfume, the company also has a line of accessories, makeup and skincare, fine jewelry, and watches.

Aside from Chanel, Gerard Wertheimer also co-owns with his brother two French vineyards, one in Margaux called Rauzan-Segla and the other is Chateau Canon in Saint-Emilion. Both vineyards have won rave reviews from oenophiles. They are also enthusiasts of equestrian who both inherited and operated an important thoroughbred horse racing stable called La Presle Farm and/or the Wertheimer farm for racing in the United States and France as the Wertheimer et Freres partnership. Their horses have won races such as the French Derby and the Breeder’s Cup Turf in the U.S.