John Lea may refer to:
- John Lea (criminologist), British criminologist
- John Lea (Royal Navy officer) (1923–2015), Royal Navy officer
- John Lea (epidemiologist) (1782–1862), lay epidemiologist
- John McCormick Lea (1818–1903), American Whig politician and mayor of Nashville, Tennessee
- John Wheeley Lea (1791–1874), English pharmacist and sauce manufacturer
This disambiguation page lists articles about people with the same name.
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