William Draper may refer to:
Business William B. Draper (1804–1885), importer and president of the Flushing National Bank William Henry Draper Jr. (1894–1974), U.S. army officer, banker, and diplomat William Henry Draper III (1928 –2026), American businessman, son of William Henry Draper Jr William Draper Jr. (merchant) (1807–1886), Utah merchant
Politics William Draper (MP) (1620–?), English politician William Henry Draper (1801–1877), lawyer, judge and political figure in Upper Canada and Canada West William Henry Draper (congressman) (1841–1921), U.S. Representative from New York William Franklin Draper (politician) (1842–1910), U.S. Representative from Massachusetts William G. Draper (1920–1964), U.S. Air Force officer and aide to President Dwight D. Eisenhower
Other William Draper (British Army officer) (1721–1787), British lieutenant-general William Draper (cricketer) (1848–1919), English cricket player and umpire William Henry Draper (hymnwriter) (1855–1933), British clergyman, noted for "All Creatures of Our God and King" William Franklin Draper (artist) (1912–2003), American painter
See also William Draper Best, 1st Baron Wynford, British politician and judge William Draper Harkins (1873–1951), American chemist William Draper Lewis (1867–1949), founder of the American Law Institute William Henry Draper (disambiguation)