William Campbell

Government officials

• Lord William Campbell, Scottish-born royal governor of Nova Scotia and South Carolina
• William Campbell (British Army officer, died 1796), governor of Bermuda in 1796
• William Campbell, 2nd Baron Stratheden and Campbell, British peer and Liberal politician
• George William Robert Campbell, British colonial Inspector General of Police of Ceylon
• William Campbell, Lord Skerrington, Scottish judge
• William Campbell (MP), British Army officer and politician, MP for Glasgow
• William Telfer Campbell, British colonial administrator

Canada

• William Campbell (judge), Scottish-born Chief Justice of the Supreme Court of Upper Canada
• William Campbell (Canadian politician), Canadian House of Commons, 1979–1980
• William Campbell (Prince Edward Island politician), farmer and political figure
• William A. Campbell (politician), Alberta provincial politician
• William Bennett Campbell, premier of Prince Edward Island
• Bill Campbell (Nova Scotia politician), Canadian politician in the Nova Scotia House of Assembly
• William Neil Campbell, Canadian politician

United States

• William Campbell (California politician), state legislator in California
• William Campbell (surveyor), American physician and politician from New York, of Cherry Valley, Otsego County
• William B. Campbell, governor of Tennessee
• William James Campbell, American politician
• William Joseph Campbell, U.S. federal judge
• William Joseph Campbell (meteorologist), American meteorologist
• William L. Campbell Jr., U.S. federal judge
• William W. Campbell (New York congressman), U.S. congressman from New York
• William Whitmore Campbell, American lawyer and politician from New York
• William Wildman Campbell, U.S. Representative from Ohio
• Bill Campbell (California politician), Republican politician from California
• Bill Campbell (mayor), former mayor of Atlanta, Georgia
• William Douglas Campbell, lobbyist and FBI informant in 2017

Australia

• William Campbell (Victorian politician), pastoralist and member of the Victorian Legislative Council
• William Campbell (New South Wales politician), New South Wales politician
• William Henry Campbell (Queensland politician), Queensland politician and newspaper editor/proprietor
• Bill Campbell (Victorian politician), Victorian politician

Sports

American football

• Bill Campbell (gridiron football), American football player
• Will Campbell (offensive lineman), American football offensive tackle
• William Campbell (gridiron football), American football offensive tackle

Association football

• William Campbell (footballer), Scottish forward with various clubs including Preston North End, Darwen and Newton Heath
• Willie Campbell (footballer), Scottish footballer
• Billy Campbell (footballer, born 1920), Scotland international footballer
• Billy Campbell (Northern Irish footballer), Northern Ireland international footballer
• William Cole Campbell, Icelandic footballer

Australian rules football

• Bill Campbell (footballer, born 1883), Australian rules footballer for Fitzroy
• Bill Campbell (footballer, born 1904), Australian rules footballer for North Melbourne

Baseball

• Bill Campbell (baseball), right-handed pitcher in MLB from 1973 to 1987
• Billy Campbell (baseball), left-handed pitcher in MLB from 1905 to 1909
• Bullet Campbell, American Negro leagues pitcher

Golf

• William C. Campbell (golfer), president of the United States Golf Association
• Willie Campbell (golfer), Scottish golfer

Other sports

• William Campbell (sport shooter), Irish Olympic sport shooter
• William Campbell (rugby union), Australian vascular surgeon and former Wallabies rugby player
• Willie Campbell (hurler), Irish hurler
• Bill Campbell (sportscaster), sportscaster in the Philadelphia area
• William Campbell (bowls), Scottish lawn bowler

Military figures

• William Campbell (general), Virginia militia general in the American Revolution
• William Campbell (Medal of Honor, 1838), American Civil War sailor and Medal of Honor recipient
• William Campbell (Medal of Honor, 1840), American Civil War soldier and Medal of Honor recipient
• William A. Campbell (Tuskegee Airman), African American pilot
• William Charles Campbell, World War I fighter pilot
• William Hunter Campbell, Ohio civilian who worked for the Union Army during the American Civil War
• William Pitcairn Campbell, British Army general during World War I
• William J. Campbell (general), American Air Force general
• William Edward Campbell, better known as William March, American soldier and novelist

Arts and entertainment

• William L. Campbell, film editor of Storm 1987
• William M. Campbell, president of Discovery Networks U.S.
• Bill Campbell (illustrator), American illustrator for the Hawk Model Company
• Big Bill Campbell, Canadian entertainer and broadcaster
• William Wilfred Campbell, Canadian poet

Actors

• William Campbell (actor), American film and television actor
• Billy Gilbert (silent film actor), American silent film actor
• Billy Campbell, American actor sometimes referred to as William Oliver Campbell or Bill Campbell

Musicians

• Junior Campbell, musician and composer
• William Campbell (Scottish musician), Scottish musician

Producers and directors

• Billy Campbell (TV executive), American TV producer
• William Campbell (filmmaker), producer, documentary filmmaker, and photojournalist
• William S. Campbell (director)

Religious figures

• William Campbell (minister), Irish minister
• William Howard Campbell, Irish missionary in southern India
• William Campbell (London Missionary Society), LMS missionary in southern India
• William Campbell (missionary), Presbyterian missionary to Taiwan
• William Rickarby Campbell, New Zealand Presbyterian minister
• Will Campbell (Baptist minister), American Baptist minister

Scientists and engineers

• William Campbell (metallographer), English metallurgist
• William C. Campbell (scientist), Irish biochemist and a Nobel laureate
• William Wallace Campbell, American astronomer

Business and economics

• William Campbell of Tullichewan, Glasgow businessman and councillor
• Bill Campbell (business executive), CEO of Intuit
• William Middleton Campbell, Governor of the Bank of England

Other people

• Bill Ransom Campbell, academic architect from North Carolina
• William D. Campbell (Scouting), world Scouting leader
• William Henry Campbell (college president), President of Rutgers College, 1862–1882
• William Shears Campbell, alleged Paul McCartney look-alike who, according to the urban legend and conspiracy theory "Paul is dead", replaced him in the Beatles

Fictional characters

• List of [Melrose Place characters|Billy Campbell], in the US prime-time TV soap opera Melrose Place, played by Andrew Shue