- John Brown (1800 - 1859) was the American abolitionist who raided Harper's Ferry.
- John Brown (1826 - 1883) was the Scottish servant of Queen Victoria.
- John Brown (1722 - 1787) was a Scottish clergyman and Biblical commentator.
- John Brown (1735 - 1788) was a Scottish physician who developed his own medical "system".
- John Brown (1810 - 1882]] was a Scottish physician and essayist.
- John Brown (1816 - 1896) was the inventor of a process for rolling armour-plate, and founded the Atlas steelworks, Sheffield.
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