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