John Johnstone
John Johnstone may refer to:
Politics
- John Johnstone (mayor), mayor of New York, 1714–1719
- Sir John Johnstone, 1st Baronet, Scottish army officer and politician
- John Johnstone (East India Company), officer of the British East India Company, MP for Dysart Burghs 1774–80
- Sir John Johnstone, 6th Baronet, British army officer and politician
- John Heywood Johnstone, British barrister and Conservative Party politician
- John Johnstone (Australian politician), member of the Victorian Legislative Assembly
- John Philemon Johnstone, member of the Ontario Legislative Assembly
Sports
- Jock Johnstone, Scottish footballer for Aston Villa
- John Johnstone (athlete), American Olympic track and field high jumper
- John Johnstone (English footballer), English footballer for Port Vale
- John Johnstone (footballer, born 1869), Scottish footballer
- John Johnstone (baseball), American professional baseball player
Other
- John Johnstone (physician), British doctor and biographer
- John Henry Johnstone, Irish actor and singer
- John Johnstone (architect), Scottish architect
- John Johnstone (businessman), British businessman and jockey
- John Young Johnstone, Canadian Impressionist painter