John Simpson (disambiguation)
John Simpson is the name of the following people:
- John Simpson (* 1953), English lexicographer
- John Simpson (soccer player, 1918) (1918-2000), English soccer player and coach
- John Simpson (soccer player, 1933) (1933-1993), English soccer player
- John Alexander Simpson (physicist) (1916–2000), American physicist
- John Alexander Simpson (neurologist) (1922-2009), Scottish neurologist
- John Milton Bryan Simpson (1903–1987), American lawyer