Pierre Wertheimer (8 January 1888 – 24 April 1965) was a French businessman.
Pierre Wertheimer's father, Ernest, had emigrated from Alsace to Paris in 1870. In Paris the elder Wertheimer purchased an interest in the theatrical make-up company Bourjois. Bourjois, an innovator in these products for the stage, developed the first dry rouge, an improvement over the grease laden face paint customarily used. By 1920, Bourjois had become the largest and most successful cosmetic and fragrance company in France. Not restricted to the European continent, Bourjois was an international enterprise with corporate holdings in America. Their facility in Rochester, New York manufactured and distributed the Helena Rubinstein line of face creams. Maintaining Bourjois as a family business, Pierre Wertheimer and his brother Paul took over the directorship of the company in 1917.
In 1924, Coco Chanel made an agreement with the Wertheimers creating a corporate entity, "Parfums Chanel."
Chanel believed that the time was opportune to extend the sale of her fragrance Chanel No. 5. to a wider customer base. Since its introduction it had been available only as an exclusive offering to an elite clientele in her boutique. Cognizant of the Wertheimer’s proven expertise in commerce, their familiarity with the American marketplace, and resources of capital, Chanel felt a business alliance with them would be fortuitous. Théophile Bader, founder of the Paris department store, Galeries Lafayette, had been instrumental in brokering the business connection by introducing Pierre Wertheimer to Chanel at the Longchamps races in 1922. Bader was interested in inaugurating the sale of Chanel No. 5 in the Galeries Lafayette, distinguishing his store as the first venue to offer the fragrance to the general public.
For a seventy percent share of the company, the Wertheimers agreed to provide full financing for production, marketing and distribution of Chanel No. 5. Théophile Bader was given a twenty percent share. For ten percent of the stock, Chanel licensed her name to "Parfums Chanel" and removed herself from involvement in all business operations. Ultimately displeased with the arrangement, Chanel worked for more than twenty years to gain full control of "Parfums Chanel." In 1935, Chanel instigated a lawsuit against the Wertheimers, which proved unsuccessful.