Sally Fox is an American inventor and entrepreneur known for developing commercially viable naturally colored cotton. Trained in entomology, she began crossbreeding cotton varieties in the 1980s to produce fibers in shades of brown and green that do not require dyeing. Her work led to the founding of FoxFibre, a company that supplies colored cotton for textiles and apparel. Fox has received recognition from environmental and textile organizations for advancing sustainable agriculture and reducing the need for chemical dyes. She cultivates cotton without synthetic pesticides, promoting alternative practices within the farming and textile industries.