List of Famous people named John

John Henry Holland was an American scientist and Professor of psychology and Professor of electrical engineering and computer science at the University of Michigan, Ann Arbor. He was a pioneer in what became known as genetic algorithms.

John IV, Duke of Brabant was the son of Antoine of Burgundy, Duke of Brabant, Lothier and Limburg and his first wife Jeanne of Saint-Pol. He was the second Brabantian ruler from the House of Valois.

John Francis Reuel Tolkien was an English priest and the eldest son of J. R. R. Tolkien. He served as a parish priest in Oxford, Coventry, Birmingham, and Stoke-on-Trent. He was also a chaplain at the University College of North Staffordshire and to two schools. During his lifetime and after his death, there were a number of allegations of child sexual abuse against him: he was questioned by the police but never charged or convicted.

John I was a member of the House of Auvergne who reigned as Count of Auvergne and Count of Boulogne from 1361 until his death. He was the eldest son of Robert VII, Count of Auvergne and Boulogne, by his second wife, Marie of the House of Dampierre. Auvergne and Boulogne were inherited by John's elder half-brother, William XII, passing to William's only child, Joan I, and then to her only child, Philip II. When the adolescent Count Philip died following a riding accident, the counties passed to John I, his granduncle.

John Eager Howard was an American soldier and politician from Maryland. He was elected as governor of the state in 1788, and served three one-year terms. He also was elected to the Continental Congress, the Congress of the United States and the U.S. Senate. In the 1816 presidential election, Howard received 22 electoral votes for vice president on the Federalist Party ticket with Rufus King. The ticket lost in a landslide.