William Wood may refer to:
Politicians
- William Wood (MP for Berkshire), Member of Parliament (MP) for Berkshire, 1395
- William Wood (15th century MP), MP for Winchester, 1413
- William Wood, 1st Baron Hatherley (1801–1881), British statesman
- William Wood (MP for Pontefract), British MP for Pontefract
- William Wood (New Zealand politician) (1827–1884), New Zealand politician from Invercargill & Mataura
- William Wood (Australian politician) (1869–1953)
- William Wood (Texas politician), member of the Twentieth Texas Legislature
- W. A. R. Wood (William Alfred Rae Wood) (1878–1970), British diplomat in Siam
- William Braucher Wood (born 1950), US diplomat
- William Bruce Wood (1848–1928), Canadian manufacturer and political figure
- William R. Wood (Indiana) (1861–1933), U.S. Representative from Indiana
- William Thomas Wood (1854–1923), New Zealand politician
- William Robertson Wood (1874–1947), Presbyterian minister and politician in Manitoba, Canada
Sportspeople
- William Wood (wrestler) (born 1888), British wrestler
- William Wood (rower) (1899–1969), Canadian rower and Olympic silver medalist
- William Wood (footballer, born 1900), English football player for Aberdare Athletic and Stoke
- William Wood (footballer, born 1910), English football defender
- William Wood (athlete) (1881–1940), Canadian track and field athlete
- William H. Wood (c. 1900–1988), college football coach
Other people
- William Maxwell Wood (1809–1880), United States Navy officer and surgeon, first Surgeon General of the U.S. Navy
- William D. Wood (1822–1867), American Union brevet brigadier general
- William Wood (ironmaster) (1671–1730), British ironmaster, best known for a notorious issue of Irish coins and the 'Rosa Americana' British America coins
- William Wood (botanist) (1745–1808), English Unitarian clergyman, botanist and activist
- William Wood (zoologist) (1774–1857), English entomologist
- William Wood (historian), Canadian historian
- William Aaron Woods (born 1942), researcher in natural language processing
- William B. Wood (actor) (1779–1861), theatre manager and actor
- William B. Wood (builder), American builder/contractor in Kentucky
- William H. Wood (labor leader), president of the National Association of Letter Carriers
- William Halsey Wood (1855–1897), American architect
- William Henry Wood, British trade unionist, active in the 1860s
- William Hollingsworth Wood (1914-2000), British author of mostly children's books
- William J. Wood (1877–1954), Canadian painter and etcher
- William Madison Wood (1858–1926), mill owner from Massachusetts
- William McKenzie Wood, former Canadian ambassador to Israel
- William P. Wood (1820–1903), first Director of the United States Secret Service
- William Ransom Wood (1907–2001), president of the University of Alaska, 1960–1973
- William Valentine Wood (1883–1959), President of the London, Midland and Scottish Railway, 1941–1947
- William W. Wood (1818–1882), head of the Bureau of Steam Engineering, 1873–1877
- William Wightman Wood (fl. 1804–1833), American journalist, businessman and poet
- William Wood (screenwriter), writer of films such as Death Car on the Freeway
Ships
- USS William M. Wood, the name of more than one United States Navy ship