John or Johnny Jackson may refer to:
Entertainment
Art
John Baptist Jackson (1701–1780), British artist
John Jackson (painter) (1778–1831), British painter
John Jackson (engraver) (1801–1848), English wood-engraver
John Richardson Jackson (1819–1877), English engraver
John Adams Jackson (1825–1879), American sculptor
J. B. Jackson (1909–1996), writer and sketch artist in landscape design
John Reno Jackson (born 1995), Caymanian artist
Music
John Enderby Jackson (1827–1903), English musician and composer
John Jackson (blues musician) (1924–2002), American Piedmont blues musician
John Jackson (musician), guitarist for the Jayhawks
Johnny Jackson (musician) (1955–2006), drummer with the Jackson 5
John Jackson, legal name of rapper Fabolous
Other entertainment
John Jackson (actor), English actor
John Jackson (travel writer) (died 1807), British traveler and writer
John G. Jackson (writer) (1907–1993), African-American cultural historian and writer
J. J. Jackson (media personality) (1941–2004), American radio and television personality
John M. Jackson (born 1950), American actor best known for playing the J.A.G. on JAG
John E. Jackson (make-up artist), American make-up artist
John Jackson (writer), English television writer
Politics
U.K.
John Jackson (Pontefract MP) (died 1637), English politician; MP 1624–1629
Sir John Jackson, 1st Baronet (1763–1820), British businessman, MP for Dover and a baronet
John Jackson (engineer) (1851–1919), British engineer and politician, MP for Plymouth Devonport, 1910–1918
John Arthur Jackson (1862–1937), British Conservative Party politician
John Jackson (South East Derbyshire MP) (1919–1976), British Conservative politician
John Edward Jackson (diplomat) (1925–2002), British diplomat
U.S.
John G. Jackson (politician) (1777–1825), Virginia politician and federal judge
John Jackson (mayor) (1809–1887), mayor of Tampa, Florida
John Jay Jackson Jr. (1824–1907), Virginia and West Virginia politician and federal judge
John Jackson (Richmond politician) (1848–1910), member of the Virginia House of Delegates
John B. Jackson (1862–1920), U.S. diplomat, United States Ambassador to Serbia
John Holmes Jackson (1871–1944), mayor of Burlington, Vermont
John S. Jackson (Florida politician), mayor of Lakeland, Florida
John S. Jackson (Wisconsin politician) (1874–1960), Wisconsin farmer and politician
Other political figures
John Rawleigh Jackson (1780–?), planter, slave-owner and politician in Jamaica
John Alexander Jackson (1809–1885), Colonial Treasurer of South Australia
John Alexander Jackson (Tasmanian politician) (1844–1889), Attorney-General of Tasmania, 1872 to 1873
John Robert Jackson (1859–1925), rancher and politician in British Columbia, Canada
Religion
John Jackson (minister) (1621–1693), English nonconformist
John Jackson (military chaplain) (died 1717), Anglican priest and first chaplain to the garrison at St John's, Newfoundland
John Jackson (controversialist) (1686–1763), English clergyman
John Jackson (archdeacon of Clogher) (fl. 1762–1783)
John Edward Jackson (antiquarian) (1805–1891), English cleric and archivist
John Jackson (bishop) (1811–1885), bishop of Lincoln and of Bishop of London
John Long Jackson (1884–1948), bishop of the Episcopal Diocese of Louisiana
John Paul Jackson (1950–2015), American author, teacher, founder of Streams Ministries International
Science
John Hughlings Jackson (1835–1911), neurologist, namesake of Jacksonian seizure
John Price Jackson (1868–1948), American electrical engineer and academic
J. Wilfrid Jackson (1880–1978), British geologist and paleontologist
John Jackson (astronomer) (1887–1958), Scottish astronomer