John Armstrong
John Armstrong may refer to:
Politicians
- John Alexander Macdonald Armstrong, Canadian politician
- John Armstrong (Australian politician)
- John Armstrong (New Zealand politician)
- John Armstrong Jr., soldier and U.S. Secretary of War
- John Armstrong Sr., American general and Continental Congressman
- John Franklin Armstrong, schoolteacher and Texas state representative
- John Armstrong (Irish politician), MP for Fore
Religion
- John Armstrong (archbishop of Armagh), Anglican bishop
- John Armstrong (bishop of Grahamstown), Anglican bishop
- John Armstrong (bishop of Bermuda), Anglican bishop
- John Armstrong (dean of Kilfenora), Anglican priest in Ireland
Sports
- Jock Armstrong, Scottish rally driver
- John Armstrong (cricketer), England
- John Armstrong (footballer, born 1890), England
- John Armstrong (footballer, born 1936), Scotland
- John Armstrong (footballer, born 1987), Scotland
- John Armstrong (rugby league), Australia
- John Lee Armstrong, American football player and coach
- John Armstrong (American football), American football defensive back
- Johnny Armstrong, American football player
Others
- John Armstrong (architect), Scottish architect
- John Armstrong (artist), British artist and muralist
- John Armstrong (British Army officer), Surveyor General
- John Armstrong (British writer/philosopher), British writer and philosopher
- John Armstrong (Carolina), American soldier and land registrar
- John Armstrong (of Carrick), farmer and musician from Northumberland
- John Armstrong (comics), British artist
- John Armstrong (frontiersman), Pennsylvania and Ohio
- John Armstrong (journalist/poet), Scotland
- John Armstrong (model railroader), US
- John Armstrong (physician), England
- John Armstrong (poet), Scotland
- C. A. J. ("John") Armstrong, British medieval historian
- John Alexander Armstrong, professor of political science at University of Wisconsin-Madison
- John Archibald Armstrong, Canadian business executive
- John Barclay Armstrong, Texas Ranger and U.S. Marshal
- John S. Armstrong, developer, Texas
- John Armstrong (engineer), Britain
- John Armstrong, New Zealand Army, made calculations for the Te Rata Bridge
- John Eric Armstrong, American serial killer
- John W. Armstrong, British naturopath who popularized urine therapy