John Merrill
John Merrill may refer to:
- John Merrill, British sportsman
- John Merrill , awarded the U.S. Medal of Honor, 1879
- John Merrill , American politician from Alabama
- John O. Merrill, American architect and structural engineer
- John P. Merrill, American physician, researcher and Harvard professor
- John C. Merrill, American professor
- John Merrill , British government official and politician