John Allan
John, Johnnie or Johnny Allan may refer to:
Politics
- John Allan (Canadian politician), Canadian politician, member for Hamilton West, 1914–1919
- John Allan (Australian politician), Premier of Victoria, 1924–1927
- John Beresford Allan, politician in Manitoba, Canada
- John Allan (Victorian MLC), colonial Victorian politician
Sports
- John Allan (golfer), Scottish golfer
- John Allan (footballer, born 1872), footballer for Derby County and Notts County
- Jack Allan (golfer), Scottish amateur golfer
- John Allan (Australian footballer), Australian rules footballer for Collingwood
- Jack Allan (footballer, born 1883), Manchester United footballer
- John Allan (footballer, born 1890), footballer for Everton, Leeds City and Coventry City, also known as Jack Allan
- John Allan (footballer, fl. 1932–33), Scottish footballer for Hamilton Academical
- John Allan (footballer, born 1931), Scottish footballer for Dunfermline Athletic, Aberdeen, Third Lanark and Bradford PA
- John Allan (rugby union, born 1934), Scottish rugby union player
- John Allan (rugby union, born 1963), Scottish and South African rugby union player
- John Allan (fighter), Brazilian mixed martial artist
Other
- John Allan (antiquarian), Scottish-born American antiquarian
- John Allan (businessman), former chairman of Tesco
- John Allan (Canadian naval officer), Canadian admiral
- John Allan (colonel), participant in the American Revolutionary War in the Massachusetts Militia
- John Allan (minister), New Zealand Presbyterian minister and professor of theology
- John Allan (numismatist), British numismatist
- John Allan (Salvation Army officer), 8th Chief of the Staff of the Salvation Army and U.S. Army colonel
- John Anthony Allan, British geographer
- John R. Allan, Scottish journalist, broadcaster, author, and farmer
- Johnnie Allan, American swamp pop musician