John Colquhoun

John Colquhoun may refer to:


 * John Colquhoun (sportsman) (1805–1885), sportsman and Scots sportswriter
 * John Colquhoun (footballer) (born 1963), Scottish football player
 * John Campbell Colquhoun, British MP for Dunbartonshire, 1832–1835, Kilmarnock Burghs, 1837–1841, and Newcastle-under-Lyme, 1842–1847
 * John Frederick Colquhoun, World Scout Committee member
 * Sir John Colquhoun, 1st Baronet (died c. 1650)
 * Sir John Colquhoun, 2nd Baronet (c. 1622–1676), of the Colquhoun baronets