J. A. Campbell may refer to:
John Argentine Campbell (died 1917), Scottish rugby player James Campbell (rugby union) (James Alexander Campbell, 1858–1902), Canadian-born rugby player who represented Scotland John Allen Campbell (1835–1880), first Governor of the Wyoming Territory James Archibald Campbell (1862–1934), founder of Campbell University Jonathan A. Campbell (born 1947), American herpetologist
See also Campbell (surname)