John Parkinson

• John Parkinson (botanist), English herbalist
• John B. Parkinson, English architect in Los Angeles
• John Parkinson (politician), British Labour Party MP for Wigan, 1918–1941
• John Parkinson (cardiologist), English cardiologist, a namesake of Wolff-Parkinson-White syndrome
• John Edward Parkinson, British academic in UK company law
• John Parkinson (footballer), Australian rules footballer