John Mackenzie
John Mackenzie may refer to:
- Jock Mackenzie, Scottish footballer
- Jock MacKenzie, Scottish footballer
- John Mackenzie, 9th of Kintail, chief of the Clan Mackenzie
- John Mackenzie, Lord MacLeod, Scottish Jacobite and soldier of fortune
- John Randoll Mackenzie, Scottish general and politician
- John Mackenzie (banker), Provost of Inverness
- John Mackenzie (1806–1848), Scottish scholar of Gaelic literature
- John Mackenzie (missionary), Scot who championed the rights of Africans in Southern Africa and proposed British intervention to curtail Boer influence
- John Mackenzie (colonial settler), veteran of Peninsula War and War of 1812, and a pioneer colonial settler of New South Wales, Australia
- John MacKenzie (doctor), Scottish army surgeon and physician
- John Stuart Mackenzie, British philosopher
- John Joseph Mackenzie, Canadian pathologist
- John Mackenzie (VC), Scottish recipient of the Victoria Cross
- John Mackenzie (sailor), British Olympic sailor
- John MacKenzie (Medal of Honor), American Medal of Honor recipient
- John Mackenzie (film director), Scottish film director
- John Ashton MacKenzie, U.S. federal judge
- John W. Mackenzie, Canadian missionary to Vanuatu
- John Drew MacKenzie, master craftsman and instructor of the Newlyn Copper school in Cornwall, UK
- John M. MacKenzie, British historian of imperialism
- John Mackenzie, 5th Earl of Cromartie, current chief of Scotland's Clan Mackenzie
- John MacKenzie (mountain guide), Britain's first professional mountain guide
- John Archie MacKenzie, member of the Nova Scotia House of Assembly
- John Kenneth MacKenzie, English medical missionary to China
- John Muir Mackenzie, acting governor of Bombay
- John Edwin MacKenzie, Scottish chemist
- John Noble MacKenzie, New Zealand flying ace of the Second World War
- Johnny MacKenzie, Scottish footballer