A lain Wertheimer, along with his brother Gérard, is the co-owner of the iconic French luxury house, Chanel. The brothers represent the third generation of their family's partnership with the brand's founder, Gabrielle "Coco" Chanel. Their grandfather, Pierre Wertheimer, was an early business partner and financial backer of Coco Chanel, particularly for her fragrance line, including the legendary Chanel No. 5. This partnership eventually led to the family gaining full ownership of the House of Chanel.

As the chairman of Chanel, Alain Wertheimer has overseen the brand's ascent to the pinnacle of the luxury world. Known for being exceptionally private and avoiding the media spotlight, he has managed the company with a long-term vision, fiercely protecting its exclusivity and heritage. Under the Wertheimers' ownership, and with the creative genius of the late Karl Lagerfeld for many decades, Chanel expanded its global footprint while maintaining its status as the ultimate symbol of Parisian chic. In addition to Chanel, the brothers own several other assets, including French lingerie brand Eres, wineries in France and California, and a respected horse racing and breeding operation.