John Coulter
John Coulter, Coalter, or Colter may refer to:
- John Coalter, Virginia lawyer
- John Colter, member of the Lewis and Clark Expedition
- John Coulter (Lord Provost), Lord Provost of Glasgow from 1736 to 1738
- John Coulter (playwright), Irish-born Canadian playwright
- John Coulter (politician), Australian politician
- John Merle Coulter, American botanist
- John B. Coulter, American general
- Jackie Coulter, Northern Irish footballer
- Jackie Coulter (loyalist), Northern Irish loyalist