Other
- John Watson, who wrote under the pen name/pseudonym Ian Maclaren (1850–1907), Scottish reverend/minister, theologian and author
- John B. Watson (1878–1958), psychologist; pioneer of behaviorism
- John Duncan Watson (1860–1946), British civil engineer
- John Fanning Watson (1779–1860), American antiquarian
- John Hugh Watson (1914–2007), known as Adam Watson, British international relations theorist and researcher, and ambassador
- John L. Watson (born 1951), American chess player and author
- John S. Watson (Chevron) (born 1956), American chairman and CEO of Chevron Corporation in 2010
- John Watson (bishop) (1520–c. 1584), Bishop of Winchester
- John Watson (college president) (1771–1802), first president of Jefferson College
- John Watson (officer of arms), English 17th century Bluemantle Pursuivant
- John Watson (philosopher) (1847–1939), Canadian philosopher and academic
- John Watson (activist) (died 2001), American black activist and editor
- John Watson (Vice-Chancellor), Vice-Chancellor of Cambridge University, 1518–1519 and 1530–1531
- John Selby Watson (1804–1884), British classical translator and murderer
- John Watson (antiquary) (1725–1783), English clergyman and antiquary
- John Boles Watson (c. 1748–1813), English theatre builder
- John Watson (film producer), English film producer
Read more about this topic: John Watson