John A. Campbell

John A. Campbell may refer to:


 * John Archibald Campbell (1811–1889), U.S. Supreme Court justice and Confederate official
 * John Allen Campbell (1835–1880), first Governor of the Wyoming Territory
 * John A. Campbell (Manitoba politician) (1872–1963), Manitoba politician
 * John Angus Campbell (born 1942), U.S. professor of rhetoric
 * John A. Campbell (lumber executive)
 * John Argentine Campbell (1877–1917), Scottish rugby union player