William Crapo "Billy" Durant (December 8, 1861 – March 18, 1947) was a leading pioneer of the United States automobile industry, who created a system in which a company held multiple marques - each seemingly independent, with different automobile lines - bound under a unified corporate holding company. Durant, along with Frederic L. Smith, co-founded General Motors, as well as Chevrolet with Louis Chevrolet. He also founded Frigidaire.

William Bradley Coley (January 12, 1862 – April 16, 1936) was an American bone surgeon and cancer researcher best known for his early contributions to the study of cancer immunotherapy. Although his work was not proven effective in his lifetime, modern discoveries and research in immunology have led to a greater appreciation for his work in cancer immunotherapy and his targeted therapy, Coley's toxins. Today, Coley is recognized as the "Father of Cancer Immunotherapy" for his contributions to the science.

William Charles may refer to:

William Charles Cole FSA LVO, DMus, FSA, FRAM, FRCM, FRCO (born 9 October 1909 in Camberwell, London – 9 May 1997) was an English conductor, composer and organist.