John Arnold
John Arnold may refer to:
Politicians
- John Arnold (Kentucky politician), member of the Kentucky House of Representatives, 1995–2013
- John Arnold (MP for Ipswich), MP for Ipswich, 1388–1399
- John Arnold (MP for Hampshire), MP for Hampshire, 1413
- John Arnold (MP for Monmouthshire), MP for Monmouthshire, 1597
- John Arnold of Monmouthshire, Ultra-Protestant and MP for Monmouth, 1680–1689, 1695 and Southwark, 1689–1695
- John H. Arnold (politician), American politician; Lieutenant Governor of Ohio, 1915–1917
- John W. Arnold, American politician; Illinois Senate, 1890–1894
Music
- John Arnold, English music editor and composer of psalmodies in the West Gallery style
- John Dent Arnold, American lyricist with composer Harry Baisden of World War I songs
- John Ayldon, English opera singer born John Arnold
Others
- John Arnold (American football), American football player
- John Arnold (bishop), English Catholic bishop
- John Arnold (cinematographer), American cinematographer
- John Arnold (judge), British judge
- John Arnold (priest), Anglican dean and author
- John Arnold (watchmaker), English watchmaker and inventor, with a son named John Roger Arnold
- John D. Arnold, former Enron trader and political activist
- John E. Arnold, American psychologist and engineer
- John H. Arnold (historian), British historian and professor
- John Nelson Arnold, American portrait painter
- Johnny Arnold, English international footballer and test cricketer
- John Arnold, Australian surf entrepreneur, behind Golden Breed
- John Arnold, perpetrator of the murder of Betty Gardner
- John Arnold, a character in the novel Jurassic Park