William Williams
William Williams may refer to:
Academics
- William Mattieu Williams, English writer on science
- William Williams (veterinary surgeon), Welsh veterinary surgeon
- William Henry Williams, English-born Australian headmaster and professor
- W. Roger Williams, English pathologist, surgeon, cancer researcher and medical writer
- William Williams (doctor), Welsh doctor and writer on sanitation issues
- William Owen Williams, British veterinarian
- William T. B. Williams, dean at the Tuskegee Institute
- William Williams (surveyor), British academic at Cambridge
- W. T. Williams, English and Australian botanist and plant taxonomist
- William Williams (metallurgist), Canadian metallurgical engineer
- William Morgan Williams, presenter of a 1969 Frazer Lecture
Art and entertainment
- William Williams Pantycelyn, Welsh composer of hymns
- William Williams (artist), artist and author of American novel Penrose
- William Williams (antiquary), Welsh historian and poet
- William Joseph Williams, American painter
- William Williams (Gwilym Cyfeiliog), Welsh poet and hymnwriter
- William Williams (Carw Coch), Welsh literary figure
- William Williams (Creuddynfab), Welsh poet and literary critic
- William Aubrey Williams, Welsh composer
- William Williams (Crwys), Welsh-language poet
- Billy Williams (music hall performer), vaudeville entertainer
- William Carlos Williams, American poet
- William Emrys Williams, known as Bill, editor-in-chief of Penguin Books, 1936–1965
- William B. Williams (DJ), disc jockey on New York City radio station WNEW
- Billy Williams (cinematographer), British cinematographer
- Bill Williams (journalist), American television journalist
- Billy Dee Williams, American actor
- William T. Williams, New York painter
- Willie Williams (set designer), British theatrical stage set, lighting designer and video director
Military
- William Peere Williams-Freeman, Royal Navy officer and admiral of the fleet
- William Williams (printer and publisher), American printer, publisher and colonel during the War of 1812
- William Williams (soldier), soldier killed in defense of Fort McHenry during the War of 1812
- William Fenwick Williams, Canadian-born British military leader
- William Orton Williams, Confederate officer executed as a spy
- William Williams (Medal of Honor), Medal of Honor recipient of the American Civil War
- William Haliday Williams, American Civil War soldier and Medal of Honor recipient
- William Charles Williams, Victoria Cross recipient of the First World War
- William Williams (VC), Victoria Cross recipient of the First World War
- William Williams (naval officer), American naval officer in the American Revolution
Politics
U.S.
- William Williams (Connecticut politician), US Continental Congressman
- William M. Williams (Texas politician), politician in the Texas House and Senate
- William B. Williams (Mississippi politician), served 1870-1871
- William Williams (Massachusetts politician), mayor of Gloucester, Massachusetts in 1879 and 1882
- William Williams (New York politician), US Representative from New York
- William Williams (Indiana politician), US Representative from Indiana
- William B. Williams (Michigan politician), US Representative from Michigan
- William M. Williams Jr., member of the Wisconsin State Assembly
- William E. Williams, U.S. Representative from Illinois
- William R. Williams, US Representative from the state of New York
- William Reid Williams, United States Assistant Secretary of War
- William Williams (surgeon), Surgeon General
- William Williams (commissioner), Commissioner of Immigration, Ellis Island
- William R. Williams (California politician), California State Treasurer, 1907–1911
- Bill K. Williams, American politician
UK
- William Peere Williams (1664–1736), Member of Parliament for Bishops Castle
- Sir William Williams, 6th Baronet, Welsh politician
- Sir William Williams, 1st Baronet, of Gray's Inn, Welsh lawyer and politician, speaker of the House of Commons
- Sir William Williams, 2nd Baronet, of Gray's Inn, Welsh politician, Member of Parliament for Denbigh, 1708–1710
- William Peere Williams (1664–1736), MP for Bishop's Castle, 1722–1727
- Sir William Williams, 2nd Baronet, of Clapton, MP for New Shoreham, 1758–1751
- William Addams Williams, British Member of Parliament for Monmouthshire
- William Williams (Radical politician), Welsh businessman based in London, Radical MP 1835–1847 and 1850–1865
- William Williams (Swansea MP), British Member of Parliament for Swansea District 1893–1895
- William Williams (Labour politician), British civil servant and politician
- Thomas Williams (Warrington MP), British Member of Parliament for Warrington
- William Williams (Weymouth MP), British Member of Parliament for Weymouth and Melcombe Regis
- W. Llewelyn Williams, Welsh journalist, lawyer and Liberal Party politician
Other countries
- William Williams (New South Wales politician), member of the New South Wales Legislative Assembly
- William Williams (Tasmanian politician), member of the Tasmanian Legislative Council
- William J. Williams, elected in the Alberta general election, 1944 under the Veterans' and Active Force party banner
Religion
- William Williams (Archdeacon of Cashel), Irish Anglican clergyman
- William Williams of Wern, Welsh Independent minister, promoter of the General Union movement of 1834
- William Williams (bishop), bishop of Waiapu in New Zealand
- William Williams (Caledfryn), Welsh Congregational minister, poet and literary critic
- Leonard Williams (bishop), of Waiapu in New Zealand
- William Augustine Williams, African-American linguist, librarian, Catholic seminarian
- William Williams (priest), Dean of St David's, 1919–1931
- William Williams (Methodist), minister and naturalist in Victoria, Australia
- William A. Williams (creationist), American Presbyterian clergyman
- William Williams (missionary), Welsh missionary to East Khasi Hills, India
- William J. Williams (Methodist) in Victoria, Australia
- William Richard Williams (theologian), principal of the United Theological College Aberystwyth
Sports
American football
- William M. Williams (American football), head coach of the Clemson college football program in 1897
- J. William Williams, American football player and coach
Australian rules football
- Billy Williams (footballer, born 1888), Australian football player for St Kilda
- Bill Williams (footballer, born 1904), Australian rules footballer for Fitzroy
- Bill Williams (Australian footballer), Australian rules footballer for South Melbourne
- Bill Williams (footballer, born 1929), Australian rules footballer for Richmond and Stawell Gift winner
Association football
- William Williams (footballer, born 1856), Welsh international footballer in the 1870s and 1880s
- Billy Williams (footballer, born 1876), former England and West Bromwich Albion footballer
- William Williams (footballer, born 1892), English footballer
- Bill Williams (1900s footballer), English football player
- Billy Williams (footballer, born 1905), former West Ham United and Chelsea footballer
- Bill Williams (footballer, born 1942), English football player
- Bill Williams (footballer, born 1960), English football player
- John Williams (footballer, born 1960), English footballer
Athletics
*Baseball
- William Williams (baseball), co-owner of the Cincinnati Reds baseball team
- Billy Williams (umpire), baseball umpire
- Billy Williams (right fielder), baseball player for the 1969 Seattle Pilots
Cricket
- William Williams (cricketer, born 1844), English cricketer
- Billy Williams (sportsman), Middlesex and MCC cricketer, also a rugby union player, referee and administrator
- Will Williams, New Zealand cricketer
Rugby
- William Williams (rugby union), Welsh rugby union footballer in the 1880s and 1890s
- William Henry Williams (rugby union), Welsh rugby union footballer who played in the 1900s for Wales, Pontymister RFC, and London Welsh RFC
- William Williams (Halifax RLFC), Welsh rugby league footballer in the 1900s and 1910s
- Billy Williams (rugby, born 1905), rugby union and rugby league footballer of the 1920s and 1930s for Great Britain and Wales
- Billy Williams (rugby, born 1925), Welsh rugby union and rugby league footballer in the 1940s
- Billy Williams (rugby union, born 1929), Wales and British and Irish Lions international rugby union player
Other
- William S. Williams, mountain man and frontiersman
- William S. Williams, travelled to South Australia on the Cygnet in the First Fleet of South Australia in 1836
- William Muir Williams, judge of the Supreme Court of Missouri in 1898
- William Williams (murderer), last person executed by Minnesota
- William M. Williams, US Commissioner of Internal Revenue 1920–1921
- William Emrys Williams, British educationalist and editor-in-chief of Penguin Books
- William Appleman Williams, American historian
- William Williams (brewer), settler and brewer in the Province of South Australia
- William Williams, character in 2006 film American Dreamz
- Willie Williams (murderer), American murderer