William, Willie, Bill, or Billy Thomas may refer to:

Academics

  • W. I. Thomas (William Isaac Thomas, 1863–1947), American sociologist
  • William Jenkyn Thomas (1870–1959), Welsh headmaster and author
  • William Davies Thomas (1889–1954), Welsh literary scholar
  • William G. Thomas III (born 1964), American historian
  • William Thomas (historian) (1936–2025), British historian
  • C. William Thomas<!-- also Bill -->, American accounting academic

Arts and entertainment

Literature

  • William Moy Thomas (1828–1910), English journalist, literary editor and novelist
  • William Thomas (Islwyn) (1832–1878), Welsh poet
  • William Thomas (Gwilym Marles) (1834–1879), Welsh poet
  • William Hannibal Thomas (1843–1935), American teacher, journalist, judge, writer and legislator
  • William Beach Thomas (1868–1957), British author and journalist
  • William F. Thomas (1924–2014), American newspaper editor

Performing arts

  • William C. Thomas (1903–1984), American film producer
  • Willie B. Thomas (1912–1977), American blues musician
  • Bill Thomas (costume designer) (1921–2000), American costume designer
  • Billie "Buckwheat" Thomas (William Thomas Jr., 1931–1980), American actor
  • Willie Thomas (trumpeter) (1931–2019), American jazz trumpeter and educator
  • William Thomas Jr. (1947–2020), American actor
  • Bill Thomas (actor) (born 1952), English actor
  • Billy Thomas (drummer) (born 1953), American drummer with McBride & the Ride
  • William Thomas (actor) (), Welsh actor
  • Billie Geter Thomas (William Bryan Geter Thomas, 1902–1962), American educator and actress

Visual arts

  • William Thomas (architect) (1799–1860), Anglo-Canadian architect
  • William Tutin Thomas (1829–1892), Anglo-Canadian architect
  • Bill Thomas (American writer, born 1934) (1934–2009), American author and photojournalist

Business and industry

  • William Bevil Thomas (1757–1825), Newfoundland merchant and land developer
  • William Kyffin Thomas (1821–1878), Australian newspaper proprietor
  • William Luson Thomas (1830–1900), British wood-engraver and newspaper proprietor
  • William Thomas (miller) (1838–1891), Australian flour mill industrialist
  • William Winstead Thomas (1848–1904), American insurance company president and architect
  • Sir William James Thomas, 1st Baronet (1867–1945), Welsh industrialist and philanthropist
  • Bill Thomas (businessman) (born 1959), British business executive

Law and politics

Australia

  • William Thomas (Australian settler) (1793–1867), Australian colonist
  • William Thomas (Victorian politician) (1869–1924), Victorian politician
  • William Lemen Thomas (1872–1921), Western Australian politician
  • Bill Thomas (Australian politician) (born 1950), Western Australian politician

UK

  • William Thomas (MP for Old Sarum and Downton) (died 1554), Welsh MP for Old Sarum and Downton
  • William Thomas (MP for Caernarvonshire) (died 1586), English politician, MP for Caernarvonshire, 1574–86
  • William Thomas (MP for Carnarvon) (died 1653), Welsh politician
  • William Thomas (MP for Ludgershall) (1630–1686), English lawyer and politician
  • Sir William Thomas, 1st Baronet (1641–1706), English politician
  • Sir William Thomas, 2nd Baronet (died 1777), a Thomas baronet of Yapton
  • Sir William Thomas, 4th Baronet (1777–1850), a Thomas baronet of Yapton
  • Sir William Thomas, 5th Baronet (1807–1867), a Thomas baronet of Yapton
  • Russell Thomas (politician) (William Stanley Russell Thomas, 1896–1957), British politician

US

  • W. C. E. Thomas (William C. E. Thomas, 1818–1876), American civic leader
  • William H. Thomas (Wisconsin politician) (1821–1898), American politician
  • William W. Thomas Jr. (1839–1927), American diplomat and politician from Maine
  • William H. Thomas (Alabama judge) (1867–1945), associate justice of the Alabama Supreme Court
  • William H. Thomas (Maryland judge) (c. 1861–1924), judge of the Maryland Court of Appeals
  • William Hannibal Thomas (1843–1935), American teacher, journalist, judge, writer and legislator
  • William Reuben Thomas (1866–1943), American civic leader
  • W. Aubrey Thomas (1866–1951), US representative from Ohio
  • William M. Thomas (), African-American politician in South Carolina
  • William D. Thomas (1880–1936), American politician
  • William Kernahan Thomas (1911–2001), American judge
  • William Henry Thomas (1920–2009), American politician from Maryland
  • Bill Thomas (Montana politician) (born 1935), American politician in Montana House of Representatives
  • Bill Thomas (born 1941), US representative from California
  • Bill Thomas (American writer, born 1943), American legal and political author
  • Bill Thomas (Alaska politician) (born 1947), American politician in Alaska House of Representatives
  • William L. Thomas (born 1967), American jurist

Elsewhere

  • William Fitz Thomas (), Irish judge
  • William Thomas (Newfoundland politician) (1785–1863), Newfoundland politician
  • William Howell Arthur Thomas (1895–1979), Canadian MP

Military

  • William ap Thomas (died 1445), Welsh soldier and sheriff
  • William Holland Thomas (1805–1893), American Confederate army officer
  • William Nathaniel Thomas (1892–1971), US Navy Chief of Chaplains
  • William Bain Thomas (1898–1967), British Army officer
  • William Garfield Thomas Jr. (1916–1942), American naval officer
  • William Waffle Thomas (1919–2014), American air force officer, former Air Force One pilot
  • William H. Thomas (Medal of Honor) (1923–1945), American soldier

Religion

  • William Thomas (bishop of Worcester) (1613–1689), Welsh Anglican bishop of Worcester
  • William Thomas (antiquary) (1670–1738), English Anglican priest and antiquary
  • William Thomas (chancellor of Llandaff Cathedral) (1734–1799), Welsh Anglican priest and scholar
  • William Griffith Thomas (1861–1924), English Anglican priest and theologian
  • William Jones Thomas (1811–1886), Welsh Anglican priest
  • William M.&nbsp;M. Thomas (1878–1951), American Episcopal bishop of the Missionary District of Brazil
  • William Nathaniel Thomas (1892–1971), American Methodist minister and US Navy Chief of Chaplains
  • William S. Thomas (1901–1986), American Episcopal suffragan bishop of the Diocese of Pittsburgh
  • William Thomas (archdeacon of Northumberland) (1927–2020), English Anglican priest
  • Bill Thomas (priest) (born 1943), British Anglican archdeacon of Llandaff

Sports

American football

  • William A. Thomas (1948–2019), American football coach
  • Bill Thomas (American football) (born 1949), American football player
  • Willie Thomas (Canadian football) (born 1955), Canadian football player
  • William Thomas (linebacker) (born 1968), American football player
  • Tra Thomas (William Thomas III, born 1974), American football player

Association football (soccer)

  • William Thomas (footballer, born 1885) (1885–?), English soccer player
  • Billy Thomas (footballer, born 1903) (1903–1992), Welsh footballer
  • Bill Thomas (New Zealand footballer) (), New Zealand footballer

Australian rules football

  • Bill Thomas (Australian footballer) (1886–1974), Australian rules footballer
  • William "Digger" Thomas (1890–1953), Australian rules footballer
  • Billy Thomas (Australian footballer) (1902–1968), Australian rules footballer
  • Bill Thomas (footballer, born 1930), Australian rules footballer

Rugby

  • Willie Thomas (rugby union) (1866–1921), Welsh rugby union footballer
  • William Llewellyn Thomas (1872–1943), Welsh rugby union footballer
  • Willie Thomas (rugby league) (1881–1963), Welsh rugby league footballer
  • Billy Thomas (rugby league) (1907–1972), Welsh rugby league footballer
  • Billy Thomas (rugby union) (1933–2013), Welsh rugby union player

Other sports

  • Bill Thomas (baseball) (1877–1950), American baseball player
  • Bill Thomas (sailor) (1918–1982), Canadian sailor
  • Will Thomas (bowls) (William Thomas, born 1954), Welsh lawn and indoor bowler
  • William Thomas (cricketer) (born 1960), English cricketer
  • William Thomas (karateka) (born 1965), English karateka
  • William Godfrey Thomas (1915–1982), Australian rower and rowing coach
  • Billy Thomas (basketball) (born 1975), American basketball player
  • Bill Thomas (ice hockey) (born 1983), American ice hockey player
  • Will Thomas (basketball) (William Thomas, born 1986), American basketball player
  • Bill Thomas (basketball) (1931–2023), American college basketball player and coach
  • Bill Thomas (cricketer) (1921–2000), English cricketer and schoolmaster

Others

  • William Thelwall Thomas (1865–1927), Welsh surgeon
  • Wilhelm Meyer (Adolph Beck case) (a.k.a. William Thomas, ), gained notoriety in Adolph Beck case
  • William Thomas (activist) (1947–2009), American anti-nuclear activist
  • William H. Thomas (physician) (born 1959), American physician

See also

  • Will Thomas (disambiguation)
  • William Thomas Jr. (disambiguation)