William Williams may refer to:

Authors and artists

• William Williams (artist) (1727-1791), artist, author of first American novel, Penrose
• William Joseph Williams (1759-1823), his son, artist; painted George Washington, John Adams and Thomas Jefferson
• William Williams (Crwys) (bardic name Crwys, 1875-1968), Welsh language poet
• William Appleman Williams (1921-1990), American historian
• William Carlos Williams (1883-1963), American poet
• Sir William Emrys Williams (1896-1977), British educationalist and editor-in-chief of Penguin Books, 1936-1965
• William Williams (surgeon) (1856-1919), Surgeon General
• William T. Williams (born 1942), New York painter

Military figures

• William Williams (VC) (1890-1965), Victoria Cross recipient of World War I
• William Charles Williams (1880-1915), Victoria Cross recipient of World War I
• William Williams (Medal of Honor) (1840-?), Medal of Honor recipient of the American Civil War
• Sir William Williams, 1st Baronet, of Kars (1800-1883), Canadian-born British military leader

Politicians

• Sir William Williams, 1st Baronet, of Gray's Inn (1634-1700), Welsh lawyer & politician, speaker of the House of Commons
• Sir William Williams, 2nd Baronet, of Gray's Inn (c. 1665-1740), Welsh politician, Member of Parliament (MP) for Denbigh, 1708-1710
• William Peere Williams (1664-1736), MP for Bishop's Castle, 1722-1727
• Sir William Williams, 2nd Baronet, of Clapton (c. 1730-1761), MP for New Shoreham, 1758-1751
• William Williams (Continental Congress) (1731-1811), U.S. Continental Congressman; signer of the Declaration of Independence for Connecticut.
• William Williams (Radical politician) (1788-1865), Welsh businessman based in London, Radical MP 1835-1847 and 1850-1865
• William Williams (New York) (1815-1876), US Representative from New York
• William Williams (Indiana) (1821-1896), US Representative from Indiana
• William B. Williams (politician) (1826-1905), US Representative from Michigan
• William E. Williams (1857-1921), U.S. Representative from Illinois
• W. Llewelyn Williams (1867-1922), Welsh journalist, lawyer and Liberal Party politician
• William R. Williams (1884-1972), US Representative from New York
• William Richard Williams (1895-1963), British civil servant and politician
• William Hume-Williams (1863-1947), Conservative Party politician in the United Kingdom
• Sir William Thomas Williams (UK politician) (1915-1986), British Member of Parliament for Warrington
• William Williams (Swansea MP) (1840-1904), British Member of Parliament for Swansea District 1893-1895
• Sir William Williams, 6th Baronet (c. 1668-1696), Welsh politician
• William Williams (Tasmanian politician) (1851-1924), member of the Tasmanian Legislative Council
• William M. "Buckskin" Williams, member of the First to Fourth and Sixth Texas Legislatures
• William R. Williams (California politician), California State Treasurer, 1907-1911
• William Addams Williams, British Member of Parliament for Monmouthshire

Religious figures

• William Williams (bishop) (1800-1878), bishop of Waiapu in New Zealand
• William Leonard Williams (bishop) (1829-1916), third bishop of Waiapu in New Zealand
• William Williams (priest) (1848-1930), Dean of St David's, 1919-1931
• William Williams Pantycelyn (1717-1791), religious leader & musician
• William Williams of Wern (1781-1840), Welsh Independent minister; promoter of the "General Union" movement of 1834
• William Richard Williams (theologian) (1896-1962), theologian and principal of the United Theological College Aberystwyth

Sportsmen

• William Henry Williams (rugby player) (1873-1936), rugby union footballer of the 1900s for Wales, Pontymister RFC, and London Welsh RFC.
• William Williams (rugby league), rugby league footballer of the 1900s and 1910s for Wales, and Halifax.
• William Williams (rugby player) (1866-1945), rugby union footballer of the 1880s and 1890s for Wales, Cardiff RFC, and London Welsh RFC.
• Billy Williams (rugby) (1905-1973), rugby union and rugby league footballer of the 1920s and 1930s for Wales (RU), Cross Keys RFC, Crumlin RFC, Great Britain (RL), Wales, and Salford.
• William Williams (rugby) (1925-2007), rugby union and rugby league footballer of the 1940s for Wales XV (RU), Monmouthshire, Newport, and Swinton (RL).
• Billy Williams (rugby player), (born 1929) rugby union footballer of the 1950s for Wales, and Swansea RFC.
• William Williams (footballer born 1856), Welsh international footballer of the 1870s and 1880s
• John Williams (footballer born 1960), English soccer player (born William John Williams)
• William M. Williams, Clemson college football program from 1897
• William David Williams, Blackpool and Everton footballer of the 1920s

Others

• Billy Dee Williams (born 1937), American actor
• William Mattieu Williams (1820-1892), English writer on science
• William Williams (doctor) (1855/6-1911), Welsh doctor and writer on sanitation issues
• William Williams (murderer) (1877-1906), last person executed by Minnesota
• William Williams (veterinarian) (1832-1900), Welsh veterinary surgeon
• William Henry Williams (1852-1941), English-born Australian Headmaster and professor
• William B. Williams (DJ) (1923-1986), disk jockey on New York City radio station WNEW
• William Williams (baseball) (1916-2009), co-owner of the Cincinnati Reds baseball team
• William S. Williams (1787-1849), mountain man and frontiersman
• William W. Williams, author of the Encyclopedia of Pseudoscience
• William Morgan Williams, presenter of a 1969 Frazer Lecture
• William Muir Williams, judge of the Supreme Court of Missouri in 1898
• William M. Williams, IS Commissioner of Internal Revenue 1920-1921
• William Williams (1862-1947), Commissioner of Immigration, 1902-1913, Ellis Island

Characters

• "Clean Willy" Williams, fictional character in Michael Crichton's novel The Great Train Robbery
• William B. Williams, played by John Candy, the babbling, chuckling sycophant sidekick to Sammy Maudlin on SCTV
• Williams Williams, in The Simpsons episode "Bart the Murderer", is the real name of the character Fat Tony
• "William W. Williams", the full name of "Big Billy" from the "Gangreen Gang" in The Powerpuff Girls

[ Source: Wikipedia ]