John Lea

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