John Macdonald may refer to:
- John S. MacDonald, co-founder of MacDonald Dettwiler
- John Macdonald (psychiatrist) (1920–2007), New Zealand forensic psychiatrist who coined the MacDonald triad of sociopathy
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Famous quotes containing the word john:
“And I looked, and behold a pale horse: and his name that sat on him was Death.”
—Bible: New Testament St. John the Divine, in Revelation, 6:8.