William Draper may refer to:

• William F. Draper (1842-1910), U.S. Representative from Massachusetts
• William Franklin Draper (1912-2003), American painter
• William Henry Draper (1801-1877), lawyer, judge and political figure in Upper Canada and Canada West
• William Henry Draper Jr. (1894-1974), U.S. army officer, banker, and diplomat
• William Henry Draper III, prominent American businessman, son of William Henry Draper Jr.
• William Henry Draper (Congressman) (1841-1921), Republican member of the U.S. House of Representatives representing New York
• William Draper (British Army officer) (1721-1787), British lieutenant-general

See also

• William Draper Best, 1st Baron Wynford, British politician and judge
• William Draper Harkins, U.S. chemist
• William Draper Lewis, founerof the Ameircan Law Institute

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