W illiam Fisher is an American heir to the Gap Inc. retail fortune. He is the son of the company's late founders, Donald and Doris Fisher, who opened the first Gap store in San Francisco in 1969. The company grew into a global apparel giant with a portfolio of iconic brands, including its flagship Gap brand, as well as Banana Republic, Old Navy, and Athleta. After his parents, William and his two brothers, Robert and John, inherited their family's massive stake in the publicly traded company.

William has been deeply involved in the family's business for his entire career. He has served on the company's board of directors for many years and has been a key steward of the family's legacy and their vast wealth, which is derived from their controlling stake in the retail empire his parents created. He is also an active investor through his private investment firm, and is a major philanthropist and art collector.