John Parkinson is the name of:
- John Parkinson (botanist) (1567–1650), English herbalist
- John B. Parkinson (1861–1935), English architect in Los Angeles
- John Parkinson (politician) (1870–1941), British Labour Party MP for Wigan, 1918–1941
- John Parkinson (cardiologist) (1885–1976), English cardiologist, a namesake of Wolff-Parkinson-White syndrome
- John Edward Parkinson (1955–2004), British academic in UK company law
- John Parkinson (footballer) (born 1944), Australian rules footballer