•
Alex St. John, American programmer •
Al St. John, American comic actor •
Ambrose St. John (1815–1875), English priest and convert to Catholicism •
Andrew St. John, American actor •
Andrew St. John (bishop), Australian bishop •
Annie St John, British television presenter •
Archer St. John (1904–1955), American comic book publisher •
Austin St. John, American actor •
Bayle St. John, British writer •
Bert St. John, Australian tennis player •
Betta St. John, American actress •
Beverly St. John, American church elder •
Bridget St John, British singer •
Caroline St John-Brooks, English journalist •
Charles St. John, 19th-century U.S. Representative from New York •
Charles Edward St. John (1857–1935), American astronomer •
Cheryl St. John, American author •
Cornelia Laws St. John (died 1902), American poet •
Cynthia Morgan St. John (1852–1919), American Wordsworthian, book collector, and author •
Daniel B. St. John, 19th-century U.S. Representative from New York •
Dai St. John, Welsh heavyweight boxer •
David St. John, American poet •
Del St. John, Canadian hockey player •
Douglas St. John, New Zealand cricketer •
Earl St. John, American-born producer •
Edward St John (1916–1994), Australian politician •
Eugenia F. St. John, American evangelist and lecturer •
Florence St. John, English actress and singer •
Frederick St John, 2nd Viscount Bolingbroke •
George St John, 3rd Viscount Bolingbroke •
Georgie Boyden St. John (1861–1899), American composer •
Gina St. John, American actress •
Harold St. John, American botanist •
Harold Bernard St. John, Barbadian politician •
Helen St. John, American musician •
Henry St John, 1st Viscount Bolingbroke (1678–1751), English statesman and philosopher •
Henry St. John (congressman), 19th-century U.S. Representative from Ohio •
Henry Beauchamp St John, British Army officer •
Howard St. John, American actor •
Ian St John (1938–2021), Scottish footballer, manager and pundit •
Isaac M. St. John (1827–1880), Confederate States Army brigadier general during the American Civil War •
J. Allen St. John, American author, artist and illustrator •
James Augustus St. John (1795–1875), British author and traveller •
Jane Martha St. John (1801–1882), British amateur photographer •
Jeff St John (1946-2018), Australian musician •
Jill St. John, American film and television actress •
John St. John (disambiguation), several people •
Jon St. John, American voice actor and singer •
Joseph St. John, Canadian politician •
Jude St. John, Canadian football league player •
Julia St. John, English actress •
Kate St John, British musician and composer •
Kristoff St. John, American actor •
Lara St. John, Canadian violinist •
Locke St. John, American baseball player •
Lynn St. John, American sports coach •
Madeleine St John, Australian author •
Marco St. John, American actor •
Mark St. John, American guitarist •
Mary Louise St. John, American nun •
Mia St. John, American boxer •
Norman St John-Stevas, Baron St John of Fawsley, British politician •
Oliver St John (ca. 1598–1673), English statesman and judge •
Oliver St John (civil servant), British administrator of India •
Orestes St. John (1841–1921), American geologist and paleontologist •
Pat St. John, American DJ •
Patricia St. John, British writer •
Pete St. John, Irish singer •
Powell St. John, American singer and songwriter •
Ray St. John, British musician •
Richard Fleming St Andrew St John (1839–1919), English orientalist •
Robert St. John (1902–2003), American author, broadcaster, and journalist •
Scott St. John, Canadian musician •
Sharmagne Leland-St. John, Native American poet •
Spenser St. John, British Consul in Brunei (19th century) •
Trevor St. John, American actor •
Warren St. John, American author Baronets of Lydiard Tregoze (1611) •
Sir John St John, 1st Baronet (1585–1648), Member of Parliament and prominent Royalist
Barons St John of Bletso (1559) •
John St John, 2nd Baron St John of Bletso (died 1596) •
Oliver St John, 5th Baron St John of Bletso •
Oliver St John, 1st Earl of Bolingbroke (1580?–1646), known from 1618 until 1624 as 4th Baron St John of Bletso, English nobleman and politician •
Paulet St Andrew St John, 8th Baron St John of Bletso •
John St John, 11th Baron St John of Bletso (died 1757) •
John St John, 12th Baron St John of Bletso (died 1767) •
St Andrew St John, 14th Baron St John of Bletso •
St Andrew St John, 15th Baron St John of Bletso •
Beauchamp St John, 17th Baron St John of Bletso •
Mowbray St John, 19th Baron St John of Bletso •
John St John, 20th Baron St John of Bletso (1917–1976) •
Anthony St John, 22nd Baron St John of Bletso == Fictional characters with the surname ==