William Johnson may refer to:

Entertainment

• Bunk Johnson (William Gary Johnson, 1879–1949), American jazz musician
• William H. Johnson (artist) (1901–1970), African-American painter of the Harlem Renaissance
• William Johnson (actor) (1916–1957), American actor
• William Jonathan Johnson, English-born organist, composer and organ builder in Sydney, Australia
• William Manuel Johnson (1872–1972), American jazz musician
• William L. Johnson, American actor and musician
• William Allen Johnson (1816–1901), American organ builder, founder of Johnson Organs
• Zip the Pinhead (William Henry Johnson, 1842–1926), American circus entertainer

Law

• William Johnson (judge) (1771–1834), Justice of the United States Supreme Court
  • SS William Johnson, a Liberty ship
• William Tell Johnson (1848–1930), American lawyer and judge from Missouri
• William John Johnston (1868–1940), Irish barrister and judge
• William Moore Johnson (1828–1918), Irish barrister and judge
• William Paul Johnson (born 1959), U.S. federal judge

Military

• William Johnson, 1st Baronet (1715–1774), Anglo–Irish major general and British Indian agent
• William Johnson, 4th Baronet (1830–1908), English soldier and aristocrat
• William Henry Johnson (VC) (1890–1945), English recipient of the Victoria Cross
• Henry Johnson (World War I soldier) (William Henry Johnson, 1892–1929), American recipient of the Purple Heart and Medal of Honor
• William Johnson (Medal of Honor) (1855–1903), American recipient of the Medal of Honor
• William Johnson (Royal Navy officer) (1784–1851), Scottish naval captain

Politics

Religion

• William Johnson (bishop) (1889–1960), Anglican Bishop of Ballarat, Australia
• William Bullein Johnson (1782–1862), American Baptist minister, first president of the Southern Baptist Convention
• William Percival Johnson (1854–1928), Anglican missionary, translator of the Bible into Chinyanja
• William Robert Johnson (1918–1986), American Roman Catholic Bishop of Orange
• William Johnson (archdeacon) (1642–1698), Anglican priest
• William R. Johnson (minister), American minister of the United Church of Christ, first openly gay minister to be ordained in a historic Protestant denomination

Science

• William Johnson (surveyor) (died 1883), British surveyor in India and governor of Ladakh
• William Arthur Johnson (1816–1880), amateur biologist and clergyman in Canada
• William Frederick Johnson (1852–1934), Irish naturalist
• William B. Johnson (mathematician) (born 1944), American mathematician
• William Brooks Johnson (1763–1830), English physician and botanist
• William Summer Johnson (1913–1995), American chemist
• Mike Johnson (technologist) (William Michael Johnson), American pioneer in superscalar microprocessor design
• Bill Johnson (scientist), FRS (1922 – 2010) British engineer

Sports

• William Johnson (baseball) (1848–1909), American baseball player
• William Johnson (cricketer, born 1884) (1884–1941), Australian cricketer
• William Johnson (cricketer, born 1962), English cricketer
• William Johnson (handballer) (born 1953), American Olympic handball player
• William Johnson (rugby league) (1916–1997), rugby league footballer of the 1930s for Wales, and Huddersfield
• William Johnson (swimmer) (1947–2005), American freestyle swimmer at the 1968 Summer Olympics
• William Johnson (wrestler) (1901–1928), American wrestler
• William "Hootie" Johnson (1931–2017), American golfer
• C. William Johnson (1917–1993), American skeleton racer
• Judy Johnson (William Julius Johnson, 1899–1989), American baseball player
• Skinny Johnson (William C. Johnson, 1911–1980), American basketball player

Other professions

• William Johnson (Canadian author) (1931–2020), Canadian journalist and author
• William Johnson (barber) (1809–1851), free African American barber and businessman
• William Johnson (historian) (1909–1992), American journalist, sometimes credited William W. Johnson
• William Johnson (police officer), English police officer
• William Andrew Johnson (1858–1943), formerly enslaved American pastry chef
• William D. Johnson (CEO) (born 1954), American chairman and CEO of Progress Energy
• William D. Johnson (journalist), American journalist and labor activist
• William Ernest Johnson (1858–1931), British logician
• William Henry Johnson (valet) (died 1864), President Abraham Lincoln's barber and valet
• William Johnson Cory (1823–1892), English educator and Uranian poet
• William R. Johnson (born 1949), chairman, president, and chief executive officer of the H. J. Heinz Company
• William Templeton Johnson (1877–1957), San Diego architect
• William Woolsey Johnson (1841–1927), American mathematician

See also

• Johnson (disambiguation)
• William R. Johnson Coliseum, an arena in Nacogdoches, Texas