John Smith is a common personal name. It is also commonly used as a placeholder name and pseudonym, and is sometimes used in the United States and the United Kingdom as a term for an average person.

Notable people with the name include:

In chronological order.

• John Smith (anatomist and chemist) (1721–1797), professor of anatomy and chemistry at the University of Oxford, 1767–1797
• John Blair Smith (1764–1799), president of Union College, New York
• John Smith (Cambridge, 1766), vice chancellor of the University of Cambridge, 1766 until 1767
• John Smith (astronomer) (1711–1795), Lowndean Professor of Astronomy and Master of Caius
• John Smith (antiquary) (1747–1807), Scottish antiquary and Gaelic scholar
• John Smith (professor of languages) (1752–1809), professor of languages at Dartmouth College
• John Augustine Smith (1782–1865), president of the College of William and Mary, 1814–1826
• John Smith (botanist) (1798–1888), curator of Kew Gardens
• John Smith (physician) (c.1800–1879), Scottish physician specialising in treating the insane
• John Alexander Smith (physician) (1818–1883), Scottish physician, antiquarian, archaeologist and ornithologist
• J. Lawrence Smith (chemist) (1818–1883), American doctor and chemist
• John Smith (dentist) (1825–1910), founder of Edinburgh's School of Dentistry
• John Campbell Smith (1828–1914), Scottish writer, advocate and Sheriff-Substitute of Forfarshire
• John Donnell Smith (1829–1928), biologist and taxonomist
• John McGarvie Smith (1844–1918), Australian metallurgist and bacteriologist
• John Bernhardt Smith (1858–1912), American entomologist
• John Alexander Smith (1863–1939), British Idealist philosopher
• John Maynard Smith (1920–2004), geneticist
• John Cyril Smith (1922–2003), leading authority on English criminal law
• John Derek Smith (1924–2003), Cambridge molecular biologist
• John Smith (sociologist) (1927–2002), English sociologist
• John D. Smith (born 1946), indologist at the University of Cambridge
• John H. Smith (mathematician), Boston College educator (retired 2005)
• John E. Sharwood Smith, English professor of classics
• John Edwin Smith, American philosopher
• John Merlin Powis Smith, English-born, American orientalist and biblical scholar

• John Smith (engraver) (1652–1742), English mezzotint engraver
• John Smith (English poet) (1662–1717), English poet and playwright
• John Christopher Smith (1712–1795), English composer
• John Warwick Smith (1749–1831), British watercolour landscape painter and illustrator
• John Stafford Smith (1750–1836), composer of the tune for "The Star-Spangled Banner"
• John Raphael Smith (1751–1812), English mezzotint engraver and painter
• John Thomas Smith (engraver) (1766–1833), draughtsman, engraver and antiquarian
• John Smith (clockmaker) (1770–1816), Scottish clockmaker
• John Rubens Smith (1775–1849), London-born painter, printmaker and art instructor who worked in the United States
• John Smith (architect) (1781–1852), Scottish architect
• John Smith Murdoch (1862–1945), Scottish architect
• John Smith (art historian) (1781–1855), British art dealer
• John Orrin Smith (1799–1843), English wood engraver
• John Frederick Smith (1806–1890), English novelist
• John Rowson Smith (1810–1864), American panorama painter
• John Kelday Smith (1834–1889), Scottish bellhanger and songwriter
• John G. Smith (poet) (died 1891), Scottish poet
• John Moyr Smith (1839–1912), British artist and designer
• John Berryman (1914–1972), originally John Allyn Smith, American poet
• John Smith (Canadian poet) (1927–2018), Canadian poet
• John Smith (actor) (1931–1995), American actor
• John N. Smith (born 1943), Canadian film director and screenwriter
• John Smith (English filmmaker) (born 1952), avant-garde filmmaker
• John Warner Smith (born 1952), American poet and educator
• John F. Smith, American soap opera writer and producer
• John Smith (comics writer) (born 1967), British comics writer
• John Smith (folk musician), English contemporary folk musician and recording artist
• John F. Smith (musician) (born 1950), British musician and trade unionist
• John Smith (comedian), British comedian, actor and performer

• John Smith (banker) (1797–1866), Scottish banker and philanthropist, working in England
• John K. Smith (died 1845), founder of SmithKline as in GlaxoSmithKline, the leading pharmaceutical business
• John Russell Smith (1810–1894), English bookseller and bibliographer
• John J. Smith (1820–1906), African-American abolitionist, Underground Railroad contributor and politician
• John Smith (brewer) (1824–1879), Tadcaster brewery founder in North Yorkshire, UK
• John L. Smith (pharmaceutical executive) (1889–1950), German-born American chemist, pharmaceutical executive and Major League Baseball team owner
• John F. Smith Jr. (born 1938), former chairman and chief executive officer, General Motors
• John Smith (executive) (born 1957), former chief executive officer, BBC Worldwide Ltd

• John Smith (housebreaker) (1661–after 1727), London housebreaker who evaded hanging thrice and was eventually transported to Virginia
• John Smith (died 1835) (1795–1835), one of the last two Englishmen who were hanged for sodomy in 1835
• John Eldon Smith (1930–1983), convicted of the murders of Ronald and Juanita Akins
• John Smith (murderer) (born 1951), American convicted murderer who killed his first and second wives

• John Eldrid Smith (born 1958), South African judge
• John Gordon Smith (surgeon) (1792–1833), Scottish surgeon and professor of medical jurisprudence
• John Sidney Smith (legal writer) (1804–1871), English legal writer
• John William Smith (legal writer) (1809–1845), English barrister and legal writer
• John Smalman Smith, (1847–1914) British judge in the Colony of Lagos
• John Lewis Smith Jr. (1912–1992), United States federal judge
• John Smith (police officer) (born 1938), British police officer, Deputy Commissioner of the Metropolitan Police, 1991–1995

• John Smith (banneret) (1616–1644), Englishman who supported the Royalist cause in the English Civil War
• John Smith (British Army officer, born 1754) (1754–1837), soldier in the American Revolutionary War
• John Smith (naval officer) (1780–1815), United States Navy officer, who served during the First Barbary War and later in the War of 1812
• Frederick Smith (British Army officer, born 1790) (John Mark Frederick Smith, 1790–1874), British general and colonel-commandant of the Royal Engineers
• John Smith (sergeant) (1814–1864), soldier in the Bengal Sappers and Miners, and Indian Mutiny Victoria Cross recipient
• John E. Smith (1816–1897), Swiss emigrant, Union general during the Civil War
• John Smith (private) (1822–1866), soldier in the 1st Madras (European) Fusiliers and Indian Mutiny Victoria Cross recipient
• John Smith (Medal of Honor, born 1826) (1826–1907), American Civil War sailor and Medal of Honor recipient
• John Smith (Medal of Honor, born 1831) (1831–?), American Civil War sailor and Medal of Honor recipient
• John Smith (Medal of Honor, born 1854) (1854–?), United States Navy sailor and Medal of Honor recipient
• John Manners Smith (1864–1920), recipient of the Victoria Cross
• John Smith (flying ace) (1914–1972), United States Marine Corps flying ace and Medal of Honor recipient

• John Smith (Victoria politician) (John Thomas Smith, 1816–1879), Mayor of Melbourne
• John Smith (New South Wales politician, born 1811) (1811–1895), pastoralist and member of the New South Wales Legislative Council
• John Smith (New South Wales politician, born 1821) (1821–1885), Scottish/Australian professor and member of the New South Wales Legislative Council
• John Samuel Smith (1841–1882), pastoralist and member of the New South Wales Legislative Assembly (Wellington)
• John Gordon Smith (politician) (1863–1921), member of the Queensland Legislative Council
• John Henry Smith (politician) (1881–1953), member of the Legislative Assembly of Western Australia

• John David Smith (1786–1849), businessman and political figure in Upper Canada
• John Smith, 1800s Cree Chief and Treaty Six signatory; founder of the Muskoday First Nation in Saskatchewan
• John Shuter Smith (c. 1813–1871), lawyer and political figure in Canada West
• John Smith (Kent MPP), member of the 1st Ontario Legislative Assembly, 1867–1871
• John Smith (Manitoba politician) (1817–1889), English-born farmer and politician in Manitoba
• John Smith (Peel MPP) (1831–1909), Scottish-born Ontario businessman and political figure
• John Smith (Ontario MP) (1894–1977), member of Canadian House of Commons, Lincoln electoral district
• Jack Smith (politician) (John Eachern Smith, 1901–1967), Canadian politician and newspaper editor
• John James Smith (1912–1987), member of Canadian House of Commons, Moose Mountain, Saskatchewan electoral district
• John Donald Smith (1919–1997), Canadian politician in the Legislative Assembly of British Columbia
• John Roxburgh Smith (1938–2018), Canadian politician in the Legislative Assembly of Ontario
• John W. Y. Smith (1869–1936), member of the Legislative Assembly of New Brunswick

• John Smith alias Dyer (1498/99–1571), member of parliament (MP) for Ipswich
• John Smith (High Sheriff of Kent) (1557–1608), MP for Aylesbury and Hythe
• John Smith (steward of Berkeley) (1567–1640), English genealogical antiquary and politician who sat in the House of Commons, 1621–1622
• John Smith (explorer) (1580–1631), helped found the Virginia Colony and became Colonial Governor of Virginia
• Sir John Smith of Grothill (c. 1600 – c. 1675), 17th-century Scottish landowner, merchant and Lord Provost of Edinburgh
• John Smith (Cavalier, born 1608) (1608–1657), English politician who sat in the House of Commons, 1640–1644
• John Smith (Chancellor of the Exchequer) (1655/56–1723), English Chancellor of the Exchequer and Speaker of the House of Commons, 1705–1708
• John Smith (judge) (1657–1726), Justice of Common Pleas in Ireland until 1702, then Baron of the Exchequer
• John Smith (Southampton MP), MP for Southampton from 1698 to 1700
• John Smith (Bath MP) (1727–1775), MP for Bath
• John Smith (Deputy Governor of Anguilla) (died 1776), Deputy Governor of Anguilla
• John Smith (Wendover MP) (1767–1842), member of Parliament for Wendover
• John Hilary Smith (born 1928), colonial governor and administrator
• John Spencer Smith (1769–1845), British diplomat, politician, and writer
• John Benjamin Smith (1796–1879), British Liberal MP for Stirling Burghs 1847–1852 and Stockport 1852–1874
• John Abel Smith (1802–1871), British Member of Parliament for Chichester and Midhurst
• John Smith (Conservative politician) (1923–2007), MP for the Cities of London and Westminster, founded the Landmark Trust
• John Smith, Baron Kirkhill (1930–2023), life peer in the House of Lords
• John Smith (Labour Party leader) (1938–1994), leader of the British Labour Party
• John Smith (Welsh politician) (born 1951), Welsh politician and Labour Party member of Parliament

• John Smith (President of Rhode Island) (died 1663), colonial president (governor) of Rhode Island
• John Smith (Virginia burgess) (1620–1663), Virginia colonial politician
• John Smith (Ohio politician, died 1824) (c. 1735–1824), United States senator from Ohio
• John Smith (Virginia representative) (1750–1836), United States representative from Virginia's 3rd Congressional District
• John Smith (New York politician, born 1752) (1752–1816), United States senator from New York
• John Cotton Smith (1765–1845), eighth Governor of Connecticut
• John Smith (Vermont politician) (1789–1858), United States representative from Vermont's 4th Congressional District
• John William Smith (politician) (1792–1845), Texas political figure and mayor of San Antonio, Texas
• John Speed Smith (1792–1854), United States representative from Kentucky
• John T. Smith (congressman) (1801–1864), United States representative from Pennsylvania's 3rd Congressional District, 1843–1845
• John B. Smith (Wisconsin politician) (1811–1879), Wisconsin politician
• John Derby Smith (1812–1884), minister, physician, and Massachusetts state legislator
• J. Lawrence Smith (New York politician) (1816–1889), New York lawyer, assemblyman, district attorney, county judge
• J. Gregory Smith (1818–1891), governor of Vermont
• John Armstrong Smith (1814–1892), United States representative from Ohio
• John Hugh Smith (1819–1870), three-time mayor of Nashville, Tennessee between 1845 and 1865
• J. Hyatt Smith (1824–1886), United States representative from New York's 3rd Congressional District
• John Quincy Smith (1824–1901), United States representative from Ohio's 3rd Congressional District
• John Lyman Smith (1828–1898), member of the 2nd Utah Territorial Legislature
• John Y. T. Smith (1831–1903), three time member of Arizona Territorial Legislature
• John C. Smith (politician) (1832–1910), Lieutenant Governor of Illinois
• John Montgomery Smith (1834–1903), Wisconsin politician
• John B. Smith (Washington politician) (1837–1917), Canadian-born American politician in the state of Washington
• John Butler Smith (1838–1914), 52nd Governor of New Hampshire
• John E. Smith (New York politician) (1843–1907), New York politician
• John Day Smith (1845–1933) Minnesota politician, lawyer, and judge
• John Walter Smith (1845–1925), 44th Governor of Maryland
• John Ambler Smith (1847–1892), United States representative from Virginia
• John Peter Smith (1848–?), mayor of Missoula, Montana
• John M. C. Smith (1853–1923), United States representative from Michigan's 3rd Congressional District
• J. H. Smith (mayor) (1858–1956), mayor of Everett, Washington and co-founder of Anchorage, Alaska
• John M. Smith (politician, born 1872) (1872–1947), American businessman and politician
• John W. Smith (Detroit mayor) (1882–1942), politician from Detroit
• John Lee Smith (1894–1963), Lieutenant Governor of Texas
• John R. Smith (agriculture commissioner) (fl. 1898–1899), North Carolina politician
• J. Joseph Smith (1904–1980), United States representative from Connecticut and Federal judge
• J. Clay Smith Jr. (1942–2018), American lawyer and educator
• John Arthur Smith (born 1942), Democratic member of the New Mexico Senate
• John R. Smith (politician, born 1945), Louisiana state senator
• John Robert Smith, mayor of Meridian, Mississippi
• John Smith (Washington politician) (born 1973), American politician of the Republican Party
• John A. Smith (Mississippi politician) (1847–?), American state senator in Mississippi
• John P. Smith, general superintendent of the Long Island State Park Commission
• John Smith (Maine politician), mayor of Saco, Maine
• John Smith (miller), a founding settler of Providence Plantation (later Rhode Island)

• John Hope Smith (c. 1787–1831), governor of colonial Ghana, 1817–22
• J. Valentine Smith (John Valentine Smith, 1824–1895), New Zealand politician

• John Smith (bishop of Llandaff) (died 1479), Welsh bishop
• John Smith (Platonist) (1618–1652), one of the founders of the Cambridge Platonists
• John Smith (bishop of Killala and Achonry) (died 1680), Irish Anglican priest
• John Smith (Unitarian) (fl. 1648–1727), Unitarian writer
• John Smith (priest, born 1659) (1659–1715), English editor of Bede
• John Smith (uncle of Joseph Smith) (1781–1854), Presiding Patriarch and member of the First Presidency of the Church of Jesus Christ of Latter-day Saints
• "Raccoon" John Smith (Restoration Movement) (1784–1868), early Restoration Movement leader
• John Smith (missionary) (1790–1824), English missionary in Demerara
• John Smith (priest, born 1799) (1799–1870), first person to transcribe the Diary of Samuel Pepys
• John Smith (nephew of Joseph Smith) (1832–1911), Presiding Patriarch of the Church of Jesus Christ of Latter-day Saints
• John Henry Smith (1848–1911), apostle in the Church of Jesus Christ of Latter-day Saints
• John Smith (moderator) (1854–1927), moderator of the General Assembly of the Church of Scotland in 1922
• John Taylor Smith (1860–1938), Anglican bishop of Sierra Leone
• John Smith (archdeacon of Llandaff), Welsh Anglican priest
• John Smith (archdeacon of Wiltshire) (1933–2000), Anglican priest
• John M. Smith (bishop) (1935–2019), American Roman Catholic bishop
• John H. Smith (bishop) (1939–2012), American Episcopal prelate, Bishop of the Episcopal Diocese of West Virginia, 1989–1999
• John Smith (God's Squad) (died 2019), Australian founder of the God's Squad motorcycle club

• John "Clipper" Smith (1904–1973), American football player and coach
• John Smith (tackle), American football tackle
• John L. Smith (born 1948), American college football coach
• John Smith (placekicker) (born 1949), former New England Patriots kicker
• John Smith (running back) (born 1954), American football running back
• J. T. Smith (American football) (John Thomas Smith, born 1955), former professional American football player
• JuJu Smith-Schuster (born 1996 as John Smith), American football wide receiver

• John Smith (sportsman, born 1855) (1855–1934), Scottish footballer and rugby union player
• John Smith (footballer, born 1865) (1865–1911), Scottish football inside-right born in Kilmarnock, Ayrshire
• Jack Smith (footballer, born 1898) (born John William Smith, 1898–1977), English international footballer born in Whitburn, County Durham
• John Smith (footballer, born 1898) (1898–?), Scottish international footballer for Ayr United and Middlesbrough
• John Richard Smith (footballer, born 1898) (1898–1986), English footballer
• John Smith (footballer, born 1901), English footballer born in Eccleshill, West Riding of Yorkshire
• John Smith (inside-left), English footballer for Port Vale 1932–33
• John Smith (1930s Gillingham footballer), English footballer who also played for Exeter City and Maidstone United
• Ted Smith (footballer, born 1914) (born John Edward Smith, 1914–1989), English football player and manager born in Grays, Essex
• John Smith (football chairman) (1920–1995), chairman of Liverpool (1973–90)
• John Smith (footballer, born 1921) (1921–?), English footballer born in Stoke-on-Trent, Staffordshire
• John Smith (footballer, born 1927) (1927–2000), English footballer for Liverpool and Torquay United
• John Smith (footballer, born 1939) (1939–1988), English footballer born in Shoreditch, London
• John Smith (footballer, born 1944), Welsh footballer born in Johnstown, Wrexham
• John Smith (footballer, born 1970), English football full back born in Liverpool
• John Smith (footballer, born 1971), English football striker born in Wigan, Lancashire

• John Smith (shortstop), shortstop, 1873–75
• John Smith (1880s first baseman) (1858–1899), first baseman in 1882
• Phenomenal Smith (John Francis Smith, 1864–1952), American baseball pitcher and manager
• John Smith (1930s first baseman) (1906–1982), first baseman in 1931
• John G. Smith (coach) (1924–1998), American college baseball, football and basketball coach
• Ford Smith (John Ford Smith, 1919–1983), American Negro leagues pitcher

• John Smith (basketball, born 1944), American basketball player known for his American Basketball Association career
• John Smith (basketball, born 1969), American college basketball coach
• John Smith (basketball, born 1984), American basketball player best known for his college career at Winona State University

• John Smith (cricketer, born 1833) (1833–1909), Lancashire and Yorkshire cricketer
• John Smith (cricketer, born 1835) (1835–1889), English cricketer
• John Smith (Derbyshire cricketer) (1841–1898), English cricketer, played for Derbyshire
• John Smith (cricketer, born 1843) (1843–1873), English cricketer, played for Cambridgeshire 1863–72
• John Smith (cricketer, born 1882) (1882–1959), English cricketer, played for Leicestershire 1921
• John Smith (cricketer, born 1919) (1919–1999), New Zealand cricketer
• John Smith (cricketer, born 1924) (1924–1991), English cricketer, played for Leicestershire 1950–1955
• John Smith (cricketer, born 1936) (1936–2020), Australian cricketer
• John Smith (New Zealand cricketer) (born 1960), New Zealand cricketer also known as Campbell Smith

• John Sidney Smith (rugby union) (1860–?), Wales rugby union international
• Johnny Smith (rugby union) (1922–1974), New Zealand rugby player, baker, soldier, and sportsman
• John Smith (rugby league) (fl. 1975–1980), New Zealand international
• J. V. Smith (John Vincent Smith, 1926–2021), English rugby player and RFU president
• John Smith (rugby union, born 1926) (1926–2006), Irish rugby player

• John Smith (Canadian rower) (1899–1973), Canadian rower at the 1924 Olympics
• John Smith (Australian footballer) (born 1933), footballer for St Kilda
• John Smith (Zambian wrestler) (born 1942), Zambian freestyle wrestler at the 1964 Olympics
• John Smith (sprinter) (born 1950), American sprint athlete and now coach
• John Smith (American wrestler) (born 1965), American wrestler, two-time Olympic gold medalist
• J. T. Smith (wrestler) (born 1967), American professional wrestler
• John Smith (South African rower) (born 1990), South African rower at the 2012 Olympics
• John Suttie Smith (1905–1975), Scottish Olympic runner
• Johnboy Smith (John Charles Smith, born 1989), British parathlete and wheelchair racer

• Sir John Smith, 1st Baronet (1744–1807), baronet
• John Kilby Smith (1752–1842), public servant from New England
• John Smith (Chippewa Indian) (died 1922), reputed to have died at the age of 137
• John Smith (abolitionist), 19th century American industrialist and abolitionist
• John Chaloner Smith (1827–1895), Irish civil engineer and writer on mezzotints
• John Brown Smith (1837–1917), American author, shorthand developer, utopianist, tax resister
• John Baptist Smith (1843–1923), invented and helped build a lantern system of naval signaling
• J. E. Smith (c. 1862/1863–1912), English trade union leader
• John Chabot Smith (1915–2002), American journalist and author
• John Douglas Smith (born 1966), sound editor
• John Henry Smith (reporter), American sports journalist, active 2000s
• John Smith (Australian journalist), Australian journalist, winner of 2016 Kennedy Award
• Portrait of John Smith, a 1708 portrait painting by Godfrey Kneller

• Ranger Smith (John Francis Smith), a park ranger in Yogi Bear cartoons
• J. Wesley Smith, a character in cartoons of Burr Shafer (1899–1965)
• John Smith (Kyon), Kyon's alias in the novels and animations of the Haruhi Suzumiya series
• John "Hannibal" Smith, a character in The A-Team
• John Smith, the human identity of Red Tornado, a fictional superhero appearing in DC Comics
• John Smith, also known as "Number Four", the protagonist of the young adult novel I Am Number Four
• John Smith, the protagonist played by Bruce Willis in Last Man Standing (1996 film)
• John Smith, the protagonist played by Brad Pitt in Mr. & Mrs. Smith
• John Smith (Doctor Who), an alias of the Doctor in Doctor Who media
• John Smith (Jericho), a character in the TV series Jericho
• Agent Smith, also known as John Smith, the main villain in The Matrix franchise
• John Smith, a Nazi SS-Obergruppenführer in the television series The Man in the High Castle, not appearing in the novel of the same name
• John Smith, the main villain played by Zachary Quinto, in the movie Hitman: Agent 47
• Johnny Smith (Dead Zone), main character in Stephen King's novel The Dead Zone and its subsequent adaptations
• John Smith, lead character of John Smith (film)

• All pages with titles containing John Smith
• Joe Bloggs
• John Doe
• Sir John Smith (disambiguation)
• John Smyth (disambiguation)
• John Smythe (disambiguation)
• Johnny Smith (disambiguation)
• Jack Smith (disambiguation)
• Jonathan Smith (disambiguation)
• Jan Smit (disambiguation)
• John Smit (born 1978), South African rugby player
• Juan Smith (born 1981), South African rugby player
• John Smith Field, baseball venue in Sacramento, CA, United States
• John Smith House (disambiguation), multiple locations
• John Smith's Brewery, a brewery founded in 1758 by John Smith at Tadcaster in North Yorkshire, England
• John Smith & Son, Glasgow-based bookseller
• Ode to J. Smith, the Travis album written about John Smith, the unknown everyday man
• Johann Schmidt (disambiguation)
• Smith of Derby Group, group of clockmaking companies including John Smith & Sons