• John, a book of the Bible
• "John, Gospel of," in Easton's Bible Dictionary (1897)
• "John (1167?-1216)," in Dictionary of National Biography, 1885-1900, London: Smith, Elder, & Co. (1885–1900) in 63 vols.
• "John of England," by Henry William Carless Davis in Encyclopædia Britannica (11th ed., 1911)
• "John," in The New Student's Reference Work, Chicago: F.E. Compton and Co. (1914)
• "John," in Collier's New Encyclopedia, New York: P. F. Collier & Son Co. (1921)

Also

• 1 John
• 2 John
• 3 John
• King John

Authors

• John the Baptist (late 1st century BCE–c. 35 CE)
• John the Evangelist (c. 6–c. 100)
• John I, Pope (470–526)
• John II, Pope (?–535)
• John III, Pope (?–574)
• John IV, Pope (?–642)
• John V, Pope (?–535)
• John of Damascus, monk (676–749)
• John VI, Pope (?–705)
• John VII, Pope (?–707)
• John VIII, Pope (?–882)
• John IX, Pope (?–900)
• John X, Pope (?–928)
• John XI, Pope (?–935)
• John XII, Pope (?–964)
• John XIII, Pope (?–972)
• John XIV, Pope (?–984)
• John XV, Pope (?–996)
• John XVII, Pope (?–1003)
• John XVIII, Pope (?–1009)
• John XIX, Pope (?–1032)
• John of Salisbury, bishop (c. 1120–1180)
• John of England, King (1167?–1216)
• John of la Rochelle (c. 1200–1245)
• John of Palermo (fl. 1221–1240)
• John XXI, Pope (?–1277)
• John XXII, Pope (1244–1334)
• John XXIII, one of three popes during the Western Schism (1370–1419)
• John of Reinstein, Czech priest, lawyer and diplomat (1375–?)
• John of Chlum, Czech nobleman (14–15 century)
• John of Avila, monk (1500–1569)
• John of the Cross, monk (1542–1591)
• John IV of Portugal, King (1603–1656)
• John XXIII, Pope (1881–1963)
• First name: John, Johns
• Others: John, Johns